{"title":"Non-Linear Junction Detectors","description":"\u003ch4\u003eWhy these exist\u003c\/h4\u003e\n\u003cp\u003eEvery other detection method depends on the device doing something. A signal detector needs it to transmit. A lens detector needs line of sight to the optics. A device switched off inside a wall cavity, a piece of furniture or a power outlet defeats both.\u003c\/p\u003e\n\u003cp\u003eA non-linear junction detector transmits a signal and listens for the harmonics that semiconductor junctions produce when energised. Almost any circuit board responds, whether powered or not. That is why these are standard equipment for professional sweeps and why they cost substantially more than consumer detectors.\u003c\/p\u003e\n\u003ch4\u003eWho uses them\u003c\/h4\u003e\n\u003cp\u003eCorporate security teams before board meetings, legal and financial firms handling sensitive matters, and professionals conducting sweeps for clients. If you are checking your own home or car occasionally, a combined\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"\/collections\/listening-device-detectors\"\u003esignal detector\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"\/collections\/spy-camera-detectors\"\u003elens detector\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eis the appropriate tool.\u003c\/p\u003e\n\u003ch4\u003eCommon questions\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003eDoes it need the device to be on?\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eNo. That is the entire point, it finds electronics regardless of power state.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWill it react to ordinary electronics?\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eYes. Interpreting the response is what the training and the price are for.\u003c\/p\u003e","products":[{"product_id":"lornet-36-enterprise-grade-3-6-ghz-parabolic-njd-counter-surveillance","title":"Lornet 36 – Enterprise-Grade 3.6 GHz Parabolic NJD Counter-Surveillance","description":"\u003cdiv style=\"font-family: Verdana, sans-serif; font-size: 14px;\"\u003e\n\u003cp\u003eLornet 36 is a nonlinear junction detector (NJD) built around a 3.6 GHz parabolic antenna for remote semiconductor discovery. It combines dual-harmonic analysis (2nd and 3rd harmonics) with selectable pulse and continuous-wave (CW) operation, automatic channel search, and anti-jamming filtering to locate powered and powered-down electronic implants. Field use is supported by a handheld form factor with telescopic rod, manual power and sensitivity control, and Li-ion battery power.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eParabolic 3.6 GHz targeting:\u003c\/strong\u003e Narrow beam helps pinpoint hidden electronics at stand-off distances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-harmonic confirmation:\u003c\/strong\u003e Second\/third harmonic response increases confidence on semiconductor hits, even when devices are off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse or CW operation:\u003c\/strong\u003e High-duty pulse for wide sweeps; CW for close-in inspection and acoustic feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean-channel tuning:\u003c\/strong\u003e Automatic frequency selection with anti-jamming algorithms reduces interference during sweeps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable workflow:\u003c\/strong\u003e Telescopic rod, handheld controls, and Li-ion power support on-site inspections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eWhere This Works Best\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUse in boardrooms, executive suites, secure facilities, vehicles, and critical infrastructure where passive or active implants may be concealed in fixtures, walls, furniture, or equipment. The narrow parabolic beam and harmonic readout support both long-range scans and precise localization.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.securitylab.com.au\/image\/catalog\/2025\/Product%20Desc%20Images\/Counter%20Surveillance\/lornet-36-parabolic-njd-counter-surveillance-detector-grey.jpg\" alt=\"Grey parabolic dish with concentric rings attached to a black handheld body, angled on a neutral backdrop; handle folded alongside the housing for storage.\" title=\"Lornet 36 parabolic NJD detector with folded handle in grey finish\" style=\"width: 100%;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmitter Bandwidth:\u003c\/strong\u003e 3581.5 - 3607.5 MHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRadiated Modes:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003ePulse (duty cycle 160) - Peak 18 W \/ Avg 112 mW\u003c\/li\u003e\n\u003cli\u003eCW (duty cycle 20) - Max 12 W \/ Avg 600 mW\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Adjustment:\u003c\/strong\u003e 22 dB manual range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeam Width:\u003c\/strong\u003e 16° parabolic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReceiver Harmonics:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e2nd harmonic: 7163 - 7215 MHz\u003c\/li\u003e\n\u003cli\u003e3rd harmonic: 10744.5 - 10822.5 MHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e ≤ -110 dBm; \u003cstrong\u003eDynamic Range:\u003c\/strong\u003e 30 dB (10 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Select Channels:\u003c\/strong\u003e 3 preset bands\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e 3.6 V, 7.8 Ah Li-ion battery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuntime:\u003c\/strong\u003e ≥ 3 h (Pulse), ≥ 2 h (CW)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (Open):\u003c\/strong\u003e 47 × 32 × 19 cm; \u003cstrong\u003eFolded:\u003c\/strong\u003e 32 × 32 × 22 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Weight:\u003c\/strong\u003e 1.5 kg; \u003cstrong\u003ePackaged Weight:\u003c\/strong\u003e 4.1 - 4.8 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e +5 °C to +40 °C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003ePackaging Contents\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLornet 36 Nonlinear Junction Detector main unit\u003c\/li\u003e\n\u003cli\u003e3.6 GHz parabolic antenna assembly\u003c\/li\u003e\n\u003cli\u003eRemovable telescopic rod (folding to handheld size)\u003c\/li\u003e\n\u003cli\u003eRechargeable 3.6 V \/ 7.8 Ah Li-ion battery\u003c\/li\u003e\n\u003cli\u003eFast-charge battery container \u0026amp; AC charger\u003c\/li\u003e\n\u003cli\u003eLaser targeting accessory\u003c\/li\u003e\n\u003cli\u003eHeadphones \u0026amp; integrated speaker for audio feedback\u003c\/li\u003e\n\u003cli\u003eOperator's manual \u0026amp; calibration certificate\u003c\/li\u003e\n\u003cli\u003eCustom-fit, rugged transport case with foam inserts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does dual-harmonic detection add in practice?\u003c\/strong\u003e\u003cbr\u003eIt checks second and third harmonics from semiconductor junctions, improving confidence and helping detect devices that are powered down.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen should I use pulse versus CW mode?\u003c\/strong\u003e\u003cbr\u003eUse pulse for wider, longer-range sweeps and CW for precise localization and acoustic feedback during close inspection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I manage interference on site?\u003c\/strong\u003e\u003cbr\u003eEngage automatic channel selection to lock a quiet frequency and rely on anti-jamming filtering to suppress center-frequency noise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long can I operate on battery power?\u003c\/strong\u003e\u003cbr\u003eTypically up to 3 hours in pulse mode or 2 hours in CW mode, depending on settings and environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the system suitable for confined areas?\u003c\/strong\u003e\u003cbr\u003eYes. The telescopic rod and narrow beam allow inspection under desks, within wall cavities, and near fixtures.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eLegal Disclaimer\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRecording and surveillance laws vary by state and territory. Please check your local requirements, obtain consent where necessary, and use this device only for lawful purposes. This information does not constitute legal advice.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eLearn More\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/bug-detectors\" target=\"_blank\"\u003eExplore all bug detectors\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/counter-surveillance-buying-guide\" target=\"_blank\"\u003eCounter-surveillance guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/spy-camera-detectors\" target=\"_blank\"\u003eHidden camera detector range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Custom Theme","offers":[{"title":"Default Title","offer_id":42507514544210,"sku":"LORNET-36","price":17809.09,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/4636\/9106\/files\/lornet-36-3.6ghz-parabolic-antenna-back-view-550x550_25361910-adb1-4d2d-afba-d0afa33e054c.jpg?v=1784281722"},{"product_id":"lornet-star24s-nonlinear-junction-detector-advanced-counter-surveillance-system","title":"Lornet Star 24S Nonlinear Junction Detector – Advanced Counter-Surveillance System","description":"\u003cdiv style=\"font-family: Verdana, sans-serif; font-size: 14px;\"\u003e\n\u003cp\u003eLornet Star 24S is a nonlinear junction detector (NJD) built for professional counter-surveillance. It uses dual-harmonic analysis of second and third harmonics, selectable pulse and continuous-wave operation, automatic channel search in 200 kHz, 2 MHz, or 13 MHz steps, and anti-jamming filtering. A handheld design with a removable 54–86 cm telescopic rod, modular antenna, and Li-ion battery system supports mobile sweeps in offices, facilities, and vehicles.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-harmonic detection:\u003c\/strong\u003e Confirms semiconductor junctions by reading second and third harmonics, including devices that are powered down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse and CW modes:\u003c\/strong\u003e Use pulse for wide, long-range scans, then switch to CW for precise localization with audio feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart frequency control:\u003c\/strong\u003e Automatic channel search with anti-jamming filtering maintains a clean working window in busy RF areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandheld with reach:\u003c\/strong\u003e Removable telescopic rod extends 54–86 cm to check wall cavities, ceilings, and under-desk spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual and audio cues:\u003c\/strong\u003e Integrated spectrum display and headphone monitoring provide clear confirmation during a sweep.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular antenna bands:\u003c\/strong\u003e Hot-swap 800 MHz, 2400 MHz, or 3600 MHz modules to match the environment without changing tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual power and sensitivity:\u003c\/strong\u003e Adjust output power and select receive sensitivity levels directly on the handle for quick control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eWhere It’s Used\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDeploy for privacy checks in boardrooms, executive suites, laboratories, server rooms, vehicles, and other sensitive areas where passive or active implants may be concealed in fixtures, furniture, or equipment. Mode switching and harmonic readout support both broad scans and pinpoint checks.\u003cbr\u003e\u003cimg src=\"https:\/\/www.securitylab.com.au\/image\/catalog\/2025\/Product%20Desc%20Images\/Counter%20Surveillance\/lornet-star24s-nljd-handheld-detector-black-display.jpg\" alt=\"Black Lornet Star24S detector head showing a color spectrum graph on the screen, attached control handle, and a separate telescopic rod\" title=\"Lornet Star24S NLJD handheld detector with detachable rod\" style=\"width: 100%;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e Transmitter Bandwidth: \u003c\/strong\u003e 2406–2414 MHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Radiated Signals: \u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003ePulse modulation (44 % duty cycle)\u003c\/li\u003e\n\u003cli\u003eContinuous-wave (CW)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Peak\/Average Power: \u003c\/strong\u003e 10 W peak \/ 230 mW avg (pulse), 200 mW (CW)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Harmonic Frequencies: \u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e2nd: 4812–4828 MHz\u003c\/li\u003e\n\u003cli\u003e3rd: 7218–7242 MHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Receiver Sensitivity: \u003c\/strong\u003e ≤ –110 dBm; dynamic range 24 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Channel Selection: \u003c\/strong\u003e 5 automatic frequency channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Power Source: \u003c\/strong\u003e Two 12 V Li-ion batteries (7.8 Ah)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Runtime: \u003c\/strong\u003e ≥ 3 h (pulse) \/ ≥ 1.5 h (CW)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Dimensions: \u003c\/strong\u003e Detector head 39 × 10 × 6 cm; rod 54–86 × 4 × 4 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Weight: \u003c\/strong\u003e ~0.8 kg (detector head) + ~0.2 kg (rod)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Operating Temp: \u003c\/strong\u003e +5 °C to +40 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e Module Thickness: \u003c\/strong\u003e ≤ 18 mm (antenna modules)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003ePackaging Contents\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Lornet Star 24S main unit\u003c\/li\u003e\n\u003cli\u003e1 x Removable telescopic pole\u003c\/li\u003e\n\u003cli\u003e1 x Replacement antenna module\u003c\/li\u003e\n\u003cli\u003e1 x Fast-charge battery container \u0026amp; 220 V charger\u003c\/li\u003e\n\u003cli\u003e2 x 12 V Li-ion rechargeable batteries\u003c\/li\u003e\n\u003cli\u003e1 x Headphones for audio monitoring\u003c\/li\u003e\n\u003cli\u003e1 x Headphones for audio monitoring\u003c\/li\u003e\n\u003cli\u003e1 x Operator’s manual\u003c\/li\u003e\n\u003cli\u003e1 x Protective carrying\/transport bag\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between pulse and CW modes?\u003c\/strong\u003e\u003cbr\u003ePulse mode provides high-power bursts for faster, wider scans. CW offers a steady carrier and is used to pinpoint a suspect spot with audio and visual feedback.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does automatic channel search help in busy environments?\u003c\/strong\u003e\u003cbr\u003eIt scans available channels and locks a quiet one, while anti-jamming filtering suppresses center-frequency noise to keep readings stable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long can I operate on battery power?\u003c\/strong\u003e\u003cbr\u003eTypical runtime is at least 3 hours in pulse mode or about 1.5 hours in CW. The fast-charge container supports quick swaps between the two batteries.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I check hard-to-reach areas?\u003c\/strong\u003e\u003cbr\u003eYes. The telescopic rod extends from 54 to 86 cm to reach ceilings, wall cavities, and under furniture without awkward positioning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it detect devices that are switched off?\u003c\/strong\u003e\u003cbr\u003eYes. Dual-harmonic detection reads the second and third harmonics from semiconductor junctions, which remain present even when a device is powered down.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eLegal Disclaimer\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRecording and surveillance laws vary by state and territory. Please check your local requirements, obtain consent where necessary, and use this device only for lawful purposes. This information does not constitute legal advice.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eLearn More\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/bug-detectors\" target=\"_blank\"\u003eExplore all bug detectors\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/counter-surveillance-buying-guide\" target=\"_blank\"\u003eCounter-surveillance guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/spy-camera-detectors\" target=\"_blank\"\u003eHidden camera detector range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Custom Theme","offers":[{"title":"Default Title","offer_id":42507514773586,"sku":"LORNET-STAR24S","price":17809.09,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/4636\/9106\/files\/counter-surveillance-professional-bug-detector-non-linear-junction-sweeper-550x550_7f30a780-121f-488b-a6e7-05d65a956ddd.jpg?v=1784281722"},{"product_id":"lornet-star24-nonlinear-junction-detector-professional-tscm-rf-bug-detection-system","title":"Lornet Star 24 Nonlinear Junction Detector – Professional TSCM \u0026 RF Bug Detection System","description":"\u003cdiv style=\"font-family: Verdana, sans-serif; font-size: 14px;\"\u003e\n\u003cp\u003eThe Lornet Star 24 is a nonlinear junction detector (NJD) with modular antennas for 800 MHz, 2400 MHz, and 3600 MHz operation. It pairs dual-harmonic analysis (second and third harmonics) with selectable pulse and continuous-wave (CW) modes, automatic frequency tuning in 200 kHz\/2 MHz\/13 MHz steps, and anti-jamming filtering. A handheld design with a removable telescopic rod and Li-ion power supports mobile sweeps in offices, facilities, and vehicles.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-harmonic verification:\u003c\/strong\u003e Reads second and third harmonics to confirm semiconductor junctions, including devices that are powered down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse and CW modes:\u003c\/strong\u003e Use pulse for rapid area scans and CW for close inspection with acoustic and visual feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular antennas:\u003c\/strong\u003e Swap 800 MHz, 2400 MHz, and 3600 MHz modules to match the environment and target band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean-channel tuning:\u003c\/strong\u003e Automatic frequency selection with anti-jamming DSP reduces interference for clearer sweeps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-range sweep capability:\u003c\/strong\u003e Up to 50 m in pulse mode with sub-meter pinpointing in CW.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eWhere It Helps Most\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUse for privacy checks in boardrooms, executive suites, laboratories, server rooms, and vehicles where covert electronics may be concealed in fixtures, furniture, or equipment. The modular antenna set and mode switching support both wide-area scans and precise localization.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.securitylab.com.au\/image\/catalog\/2025\/Product%20Desc%20Images\/Counter%20Surveillance\/lornet-star24-njd-handheld-detector-black-rod-module.jpg\" alt=\"Black Lornet Star24 nonlinear junction detector laying on a grey surface with detachable telescopic rod, control handle, and colored LED level bar\" title=\"Lornet Star24 NJD with control handle and LED status bar\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency bands: 800 MHz \/ 2400 MHz \/ 3600 MHz\u003c\/li\u003e\n\u003cli\u003eTuning resolution: 200 kHz (800 MHz), 2 MHz (2400 MHz), 13 MHz (3600 MHz)\u003c\/li\u003e\n\u003cli\u003ePeak output (pulse): up to 18 W; average CW ≤300 mW\u003c\/li\u003e\n\u003cli\u003eReceiver sensitivity: ≤ –110 dBm\u003c\/li\u003e\n\u003cli\u003eBattery life: ~2.5–3 hours (pulse) or ~1.5 hours (CW)\u003c\/li\u003e\n\u003cli\u003eDimensions (unit): approx. 39–102 cm length, 10–16 cm width, 6 cm depth (varies by model)\u003c\/li\u003e\n\u003cli\u003eWeight: 0.8–1.5 kg (depending on model)\u003c\/li\u003e\n\u003cli\u003eOperating temp: +5 °C to +40 °C\u003c\/li\u003e\n\u003cli\u003eDetection range: Up to 50 m (pulse); sub-meter (CW)\u003c\/li\u003e\n\u003cli\u003eTelescopic rod length: 54–86 cm\u003c\/li\u003e\n\u003cli\u003eBattery configuration: Dual 12 V Li-ion rechargeable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003ePackaging Contents\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x LORNET STAR 24 detector unit\u003c\/li\u003e\n\u003cli\u003e1 x 1–3 antenna modules (per your selected kit)\u003c\/li\u003e\n\u003cli\u003e1 x Removable telescopic rod\u003c\/li\u003e\n\u003cli\u003e1 x Remote control module\u003c\/li\u003e\n\u003cli\u003e2 x rechargeable 12 V Li-ion batteries\u003c\/li\u003e\n\u003cli\u003e1 x Battery charger and charging container\u003c\/li\u003e\n\u003cli\u003e1 x Headphones for audio monitoring\u003c\/li\u003e\n\u003cli\u003e1 x Operator’s manual\u003c\/li\u003e\n\u003cli\u003e1 x Protective carrying\/transport bag\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhich bands does the detector cover?\u003c\/strong\u003e\u003cbr\u003eIt uses interchangeable 800 MHz, 2400 MHz, and 3600 MHz antenna modules to suit different environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen should I use pulse versus CW mode?\u003c\/strong\u003e\u003cbr\u003ePulse mode is best for broad, faster scans. CW mode is used to pinpoint a suspect location with acoustic and visual feedback.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I minimise interference during a sweep?\u003c\/strong\u003e\u003cbr\u003eEnable automatic tuning to select a quiet channel and rely on the anti-jamming filter to suppress background noise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat runtime can I expect?\u003c\/strong\u003e\u003cbr\u003eTypical operation is about 2.5–3 hours in pulse mode or about 1.5 hours in CW, depending on settings and conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I inspect hard-to-reach areas?\u003c\/strong\u003e\u003cbr\u003eYes. The removable telescopic rod enables checks inside wall cavities, under desks, and along ceilings without awkward positioning.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eLegal Disclaimer\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRecording and surveillance laws vary by state and territory. Please check your local requirements, obtain consent where necessary, and use this device only for lawful purposes. This information does not constitute legal advice.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eLearn More\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/bug-detectors\" target=\"_blank\"\u003eExplore all bug detectors\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/counter-surveillance-buying-guide\" target=\"_blank\"\u003eCounter-surveillance guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/spy-camera-detectors\" target=\"_blank\"\u003eHidden camera detector range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Custom Theme","offers":[{"title":"Default Title","offer_id":42507515002962,"sku":"LORNET-STAR-24","price":14536.36,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/4636\/9106\/files\/professional-bug-detector-scanner-lornet-star24-550x550.jpg?v=1784281724"},{"product_id":"cayman-st-401-403-non-linear-detector","title":"Cayman ST-401(403) Non-Linear Junction Detector","description":"\u003cdiv style=\"font-family: Verdana, sans-serif; font-size: 14px;\"\u003e\n  \u003cp\u003eThe Cayman ST-401 (403) non-linear junction detector (NLJD) is designed to locate hidden electronics by illuminating harmonic responses from semiconductors such as transistors and diodes. It transmits RF energy and displays the returning harmonics so operators can distinguish natural materials from artificial electronic components, helping to find deactivated or active bugs, microphones, cameras, and trackers in places where visual inspection is ineffective.\u003c\/p\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFinds active and dormant devices:\u003c\/strong\u003e Detects electronics whether powered on or off by reading non-linear harmonic responses.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial discrimination:\u003c\/strong\u003e Helps differentiate natural semiconductors from artificial structures for fewer false leads.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eControlled sensitivity:\u003c\/strong\u003e Manual adjustment range with step changes supports precise localisation during close searches.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDual indication:\u003c\/strong\u003e Visual LED bars plus audio monitoring provide clear feedback in noisy or quiet environments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eField-ready kit:\u003c\/strong\u003e Uses standard rechargeable cells and ships with a shock-proof transport case for protection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eWhere It’s Typically Deployed\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cp\u003eUse the NLJD for technical security sweeps of offices, boardrooms, mail and parcel screening areas, cargo checks, hotels, private residences, and sensitive facilities. It supports searches of furnishings, walls, and personal effects to reveal hidden electronics that conventional RF or visual checks may miss.\u003c\/p\u003e\n  \u003cp\u003e\u003cimg src=\"https:\/\/www.securitylab.com.au\/image\/catalog\/2025\/Product%20Desc%20Images\/Counter%20Surveillance\/cayman-st-401-non-linear-junction-detector-display-closeup.jpg\" alt=\"Cayman ST-401 non-linear junction detector head with LED input bars, power and mode labels, control port and cable\" title=\"Cayman ST-401 NLJD head with LED bar display\" style=\"width: 100%;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFrequency Range: 2-3GHz\u003c\/li\u003e\n    \u003cli\u003eMaximum Peak Power: Less than 2W\u003c\/li\u003e\n    \u003cli\u003eAntenna: Elliptic\u003c\/li\u003e\n    \u003cli\u003eOperation Modes: \"Search\", \"Audio\", \"Adaptation\u003c\/li\u003e\n    \u003cli\u003eSensitivity Adjustment Range(Manual): 40dB (5 Steps of 8dB per adjustment)\u003c\/li\u003e\n    \u003cli\u003eVisual Indication: Three 16 LED Bars\u003c\/li\u003e\n    \u003cli\u003eAudible Indication: Built-in Speaker, and Headphones\u003c\/li\u003e\n    \u003cli\u003ePower Supply: Two Lithium ION Rechargeable Batteries (18650mAH) 3,7V\u003c\/li\u003e\n    \u003cli\u003eBattery-Life: 3-4 Hours (Full Charge - Depending on Operation Mode)\u003c\/li\u003e\n    \u003cli\u003eCharge Time: ~3 Hours\u003c\/li\u003e\n    \u003cli\u003eDimensions (portable): 300mm x 250mm x 130mm (L*W*H)\u003c\/li\u003e\n    \u003cli\u003eWeight of the Detector: 1.3kg\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e\u003cstrong\u003ePackaging Contents\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Cayman ST-401 Detector\u003c\/li\u003e\n    \u003cli\u003e4 x Lithium ION Rechargeable Batteries 18650mAh\u003c\/li\u003e\n    \u003cli\u003e1 x Charging Unit\u003c\/li\u003e\n    \u003cli\u003e1 x Charger Cable\u003c\/li\u003e\n    \u003cli\u003e1 x Headphones\u003c\/li\u003e\n    \u003cli\u003e2 x Test Targets\u003c\/li\u003e\n    \u003cli\u003e1 x User Manual \/ User Guide\u003c\/li\u003e\n    \u003cli\u003e1 x Transportation Shock-proof Case\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eCan it find devices that are switched off?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eYes. NLJDs reveal the non-linear response of semiconductor junctions, allowing detection of powered and unpowered electronics.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow should I interpret the LED bars and audio?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eIncreasing bar counts and stronger audio indicate a rising harmonic response. Reduce sensitivity as the indication increases to pinpoint the source.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhere should I focus during a sweep?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eScan furniture, wall fixtures, parcels, and dense materials where electronics may be concealed. Use step sensitivity to narrow the location.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat powers the detector and how long does it run?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eIt uses standard rechargeable 18650 batteries with typical battery life of 3–4 hours per full charge, depending on the operating mode.\u003c\/p\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eLegal Disclaimer\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cp\u003eRecording and surveillance laws vary by state and territory. Please check your local requirements, obtain consent where necessary, and use this device only for lawful purposes. This information does not constitute legal advice.\u003c\/p\u003e\n\n  \u003chr\u003e\n  \u003ch2\u003e\u003cstrong\u003eLearn More\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/bug-detectors\" target=\"_blank\"\u003eExplore all bug detectors\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/counter-surveillance-buying-guide\" target=\"_blank\"\u003eCounter-surveillance Buying guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"VIMEL","offers":[{"title":"Default Title","offer_id":42507537055826,"sku":"CAYMAN-ST-401","price":12636.36,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/4636\/9106\/files\/listening-device-finder-550x550_ae5e6550-292d-4adc-b1a3-5b0c80758b55.jpg?v=1784281802"},{"product_id":"cayman-st-402-non-linear-junction-detector","title":"Cayman ST-402 Non-Linear Junction Detector","description":"\u003cdiv style=\"font-family: Verdana, sans-serif; font-size: 14px;\"\u003e\n  \u003cp\u003eThe Cayman ST-402 non-linear junction detector locates concealed electronics by transmitting RF energy and analysing harmonic responses from semiconductor junctions. It supports close-in localisation with manual sensitivity steps, provides visual LED bar feedback with audio monitoring, and uses a telescopic bar for extended reach during technical security sweeps of rooms, furniture, parcels, and structural elements.\u003c\/p\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNon-linear detection:\u003c\/strong\u003e Identifies semiconductor junctions to reveal hidden electronics behind surfaces and inside objects.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eActive or dormant devices:\u003c\/strong\u003e Detects powered and powered-off recorders, cameras, trackers, and other circuits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision control:\u003c\/strong\u003e Manual sensitivity adjustment in stepped increments helps pinpoint exact locations.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDual feedback:\u003c\/strong\u003e Visual LED bars with audio monitoring improve interpretation in both quiet and noisy areas.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eErgonomic reach:\u003c\/strong\u003e Telescopic bar with armrest supports extended, stable sweeps during long sessions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInterference resistant:\u003c\/strong\u003e Designed to maintain reliable operation in challenging RF environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eWhere It’s Used\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cp\u003eApply the ST-402 to screen offices, hotels, meeting rooms, mail and parcel lines, vehicles, and furnishings when visual or RF-only checks are insufficient. Sweep walls, ceilings, fixtures, and containers to isolate harmonic responses and confirm likely electronic targets.\u003cbr\u003e\u003cimg src=\"https:\/\/www.securitylab.com.au\/image\/catalog\/2025\/Product%20Desc%20Images\/Counter%20Surveillance\/cayman-st-402-nljd-control-head-front-view-led-bars.jpg\" alt=\"Front view of Cayman ST-402 non-linear junction detector head with input level LED columns, power\/mode labels, control connector, USB port, and handle\" title=\"Cayman ST-402 NLJD head with input level LEDs and USB port\" style=\"width: 100%;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFrequency Range: 2-3GHz\u003c\/li\u003e\n    \u003cli\u003eMaximum Peak Power: Less than 2W\u003c\/li\u003e\n    \u003cli\u003eAntenna: Elliptic\u003c\/li\u003e\n    \u003cli\u003eOperation Modes: \"Search\", \"Audio\", \"Adaptation\u003c\/li\u003e\n    \u003cli\u003eSensitivity Adjustment Range(Manual): 40dB (5 Steps of 8dB per adjustment)\u003c\/li\u003e\n    \u003cli\u003eVisual Indication: Three 16 LED Bars\u003c\/li\u003e\n    \u003cli\u003eAudible Indication: Built-in Speaker, and Headphones\u003c\/li\u003e\n    \u003cli\u003ePower Supply: Two Lithium ION Rechargeable Batteries (18650mAH) 3,7V\u003c\/li\u003e\n    \u003cli\u003eBattery-Life: 3-4 Hours (Full Charge - Depending on Operation Mode)\u003c\/li\u003e\n    \u003cli\u003eCharge Time: ~3 Hours\u003c\/li\u003e\n    \u003cli\u003eDimensions (Fully Expanded): 1500mm x 250mm x 130mm (L*W*H)\u003c\/li\u003e\n    \u003cli\u003eWeight of the Detector: 1.75kg\u003c\/li\u003e\n    \u003cli\u003eExtended Runtime: Up to 8 Hours with Additional Batteries\u003c\/li\u003e\n    \u003cli\u003eTransport Case: Shock-proof Case Included\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e\u003cstrong\u003ePackaging Contents\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Cayman ST-402 Detector\u003c\/li\u003e\n    \u003cli\u003e4 x Lithium ION Rechargeable Batteries 18650mAh\u003c\/li\u003e\n    \u003cli\u003e1 x Charging Unit\u003c\/li\u003e\n    \u003cli\u003e1 x Charger Cable\u003c\/li\u003e\n    \u003cli\u003e1 x Headphones\u003c\/li\u003e\n    \u003cli\u003e2 x Test Targets\u003c\/li\u003e\n    \u003cli\u003e1 x User Manual \/ User Guide\u003c\/li\u003e\n    \u003cli\u003e1 x Transportation Shock-proof Case\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cp\u003e\u003cstrong\u003eCan it detect electronics that are switched off?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eYes. NLJD technology reads harmonic responses from semiconductor junctions, allowing detection of powered and unpowered devices.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow do I pinpoint the exact location?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eFollow rising LED bars and audio level, then reduce sensitivity step by step to narrow the peak response as you move the probe.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat environments is it suitable for?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eUse in rooms, furnishings, parcels, and structural elements where electronics may be concealed and visual inspection is limited.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhat is the typical operating time?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eBattery life is 3–4 hours per full charge, depending on the selected operating mode.\u003c\/p\u003e\n\n  \u003ch2\u003e\u003cstrong\u003eLegal Disclaimer\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cp\u003eRecording and surveillance laws vary by state and territory. Please check your local requirements, obtain consent where necessary, and use this device only for lawful purposes. This information does not constitute legal advice.\u003c\/p\u003e\n\n  \u003chr\u003e\n  \u003ch2\u003e\u003cstrong\u003eLearn More\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/bug-detectors\" target=\"_blank\"\u003eExplore all bug detectors\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/www.securitylab.com.au\/counter-surveillance-buying-guide\" target=\"_blank\"\u003eCounter-surveillance Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"VIMEL","offers":[{"title":"Default Title","offer_id":42507571200082,"sku":"CAYMAN-ST-402","price":12636.36,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/4636\/9106\/files\/vimel-counter-surveillance-device-anti-spy-recorder-detect-anywhere-voice-recorder-hand-held-protection-safety-privacy-cayman-technology-detection-550x550.jpg?v=1784281966"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/4636\/9106\/collections\/counter1.png?v=1787115621","url":"https:\/\/securitylab.co.nz\/collections\/non-linear-junction-detectors.oembed","provider":"Securitylab NZ","version":"1.0","type":"link"}