Product Detail
NLJD-802Plus Non-linear junction detector
Model: NLJD-802Plus
Original: 0.00

Made in China


NLJD-802 Plus is an upgraded model of NLJD-802 with over 1m telescopic rod. It is a miniaturized non-linear junction detector at good detection performance. DT-820Plus can detect electronic devices hidden in walls, floors, ceilings, lamps, furniture or containers, whether they are transmitting signals or switching on or off, and alarm them by display, sound and vibration, so that the detectors can find the target equipment for protecting organizations and individuals Private information. The equipment comes with a extendable pole for longer-distance inspection.

Technical Principles:

Nonlinear junction detector emits S-band fundamental wave to the target area or object, and the receiver captures the second and third harmonics generated by the target object. Artificial intelligence algorithm is used to analyze the harmonic law, so as to detect and identify the electronic equipment with non-linear junctions.

Application scenarios:

It can be widely used in government, public security, prison, justice, army, education examination, business security and personal privacy protection, etc.

ØBusiness Safety:Detecting unauthorized electronic devices, such as eavesdroppers, mobile phones and devices with SIM cards, hidden in company board rooms or secret offices;

ØPublic Safety:Detecting electronic devices hidden or prohibited from use in safe areas, such as detonating devices, remote controllers, etc.

ØPersonal Privacy Protection:Hidden cameras and surveillance devices such as recording pens, cameras, etc. in residential buildings and hotels.


ØHigh positioning accuracy:The product uses 2400MHz radio frequency detection technology with high precision positioning characteristics.

ØHigh semiconductor recognition ability:The product built-in spectrum analyzer supporting second and third harmonic detection can quickly and effectively identify devices containing semiconductors.

ØHigh Sensitivity:Especially for SIM card devices with high sensitivity, to ensure that secrets, mobile communications equipment can be quickly detected.

ØLow false alarm rate:Built-in nondestructive detection algorithm greatly improves the detection capability, and the false alarm rate is very low.

ØHigh Safety and reliability:Meets the requirements of electromagnetic radiation and absolute safety to human body.

ØFlexible operation:Support automatic transmission power and manual mode selection, easy to operate manually

ØUser-friendly operation interface:Support OLED visual graphical interface, vivid display of power emission level and second and third harmonic graphics, easy to operate.

ØHigh performance/price rate: With the world most cost-effective, cost-saving and excellent performance.



Technical index

Product working frequency band


frequency range

2.404 GHz - 2.472 GHz

Receiving 2nd~3rd Harmonic Range

4.808 GHz-4.944 GHz,
7.212 GHz-7.416 GHz

Pulse mode transmit power (maximum)


Receiving sensitivity

Less than -125dBm

Receiving dynamic adjustable range


Battery Working Time in Maximum Power Pulse Mode


Battery type

Replaceable Lithium Battery

Charging time

Fast Charging 3H

Interactive interface

LCD Display Receiving Harmonic Signal Intensity

Audio prompts are supported and headphones can be connected.

Supporting Vibration Tips

Detection Distance

GPS Module: 40-50cm;

Mobile Phone: 15-22cm;

Sim Card: 8-9,5cm

Product size

(370mm*96mm*38.5mm) ±5mm

Transit case dimension

(355mm * 295mm *165mm) ±10mm

Extendable Pole


Product weight


Working temperature

-20 to 55

Working humidity

Less than 93%, no condensate

*Product specifications and descriptions subject to change without notice.