NONLINEAR
JUNCTION
DETECTORS
A complete NLJD range for professional electronic-device detection, counter-surveillance sweeps, security inspections and government operations. The range combines 2.4 GHz RF probing with detection of second- and third-order harmonics.
One range.
Four capability levels.
The EZRYS nonlinear junction detector family covers compact low-profile sweeps, advanced handheld detection, thermal-assisted inspection and enhanced government-use detection. All four models operate at 2.4 GHz and receive the second and third harmonics.
NJ-200
A compact nonlinear junction detector built for rapid, low-profile sweeps. It locates concealed electronic devices in walls, floors, ceilings, light fittings, furniture and containers whether devices are powered or transmitting.
NJ-400
A handheld nonlinear junction detector combining compact form with full-power performance. It supports time-domain harmonic peak mode and harmonic audio mode for closer target analysis. It detects semiconductor and metal-rust junctions with audio, visual and vibration alerts.
NJ-400T
The NJ-400T integrates thermal imaging into the NJ-400 platform, helping operators assess the physical form of concealed objects while detecting electronic devices behind common surfaces. Thermal image display works alongside vibration and audio prompts.
NJ-600
An enhanced nonlinear junction detector for active and powered-down devices. It automatically selects the receiving frequency channel with the least interference and combines automatic power adjustment with simultaneous semiconductor and metal detection.
NONLINEAR JUNCTION
DETECTORS COMPARISON
Side-by-side technical comparison of the four EZRYS NLJD models.
| Specification | NJ-200 | NJ-400 | NJ-400T | NJ-600 |
|---|---|---|---|---|
| Operational frequency bands | 2.4 GHz | 2.4 GHz | 2.4 GHz | 2.4 GHz |
| Frequency range | 2.4–2.5 GHz | 2.4–2.5 GHz | 2.4–2.5 GHz | 2.4–2.5 GHz |
| Received 2nd & 3rd harmonics | 4.8–5.0 / 7.2–7.5 GHz | 4.8–5.0 / 7.2–7.5 GHz | 4.8–5.0 / 7.2–7.5 GHz | 4.8–5.0 / 7.2–7.5 GHz |
| Maximum transmit power | 1 W | 4 W | 4 W | 4 W |
| Receiving sensitivity | ≤ −125 dBm | ≤ −140 dBm | ≤ −140 dBm | ≤ −140 dBm |
| Receiving dynamic range | 30 dB | 30 dB | 30 dB | 50 dB |
| Battery life, max power/pulse | 4 h | 4 h | 4 h | 4 h |
| Battery type | Replaceable lithium | Replaceable lithium | Replaceable lithium | Replaceable lithium |
| Charging time | 2.5 h fast charging | 2.5 h fast charging | 2.5 h fast charging | 2.5 h fast charging |
| Detection range | GPS up to 50 cm; mobile phone up to 22 cm; SIM card up to 3.3 cm | GPS up to 50 cm; mobile phone up to 22 cm; SIM card up to 3.3 cm | GPS up to 50 cm; mobile phone up to 22 cm; SIM card up to 3.3 cm | ≥ 6 m, GA1236-2015 C-level standard |
| Product dimensions | 365 × 110 × 65 mm | 538 × 170 × 113 mm | 548 × 170 × 113 mm | 750 × 114 × 108 mm |
| Product weight | 0.8 kg | 1.5 kg | 1.6 kg | 1.6 kg |
| Operating temperature | −20 °C to 45 °C | −20 °C to 45 °C | −20 °C to 45 °C | −10 °C to 55 °C |
| Operating humidity | ≤85%, non-condensing | ≤85%, non-condensing | ≤85%, non-condensing | ≤93%, non-condensing |
| Interface | LCD, audio, headphones/speakers, vibration | LCD, audio, headphones/speakers, vibration | LCD, audio, headphones/speakers, vibration | LCD, audio, headphones/speakers, vibration |
Maximum transmit power
Receiving dynamic range
NJ-400T Thermal Imaging
Thermal imaging parameters supplied in the EZRYS catalogue for the NJ-400T.
| NJ-400T thermal imaging parameter | Specification |
|---|---|
| Array format | 160 × 120, continuous scanning |
| Pixel size | 12 µm |
| Thermal imaging sensitivity | < 50 mK (0.050 °C) |
| Field of view — horizontal | 57° |
Ready for a professional TSCM sweep?
Use the range comparison above to select the NLJD platform suited to your inspection environment.