Project Description

  • DT-830 Thermal Non-Linear Junction Detector
  • DT-830 Thermal Non-Linear Junction Detector
  • DT-830 Thermal Non-Linear Junction Detector

Model: DT-830

Thermal Imaging Non-Linear Junction Detector

General Configuration:

 Working Frequency Range: 2.404GHz-2.472GHz
 Receiving Harmonic Range: Manual or Auto
 Receiving Sensitivity: Less than -140dBm
 Battery: Li Battery, working over 5 Hours
 Interactive Interface: LCD, Audio, Vibration
 Detection Distance: GPS module @ 400-500mm; Mobile Phone @ 180-220mm; SIM Card @ 90-120mm
Array Format: 160 * 120 Continuous Scanning
 Thermal Image Senssitivity: < 50mK

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DT-830 is a new type of thermal imaging non-linear junction detector, which integrates the functions of thermal imaging and non-linear junction detector. It can detect electronic devices hidden in walls, floors, ceilings, lamps, furniture or containers, as well as judge the appearance of hidden electronic products, so as to facilitate rapid and accurate judgement by inspectors and improve the efficiency of security inspection. By means of thermal image display, vibration and sound prompt, the detectors can quickly lock the hidden target.

NLJD Detectors from iSecus-What can be detected

Application Scenarios:

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

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

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

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

Non-Linear Junction Detector Application Scenerios


  • Fast Judgment of Hidden Object Types: Through thermal imaging function, we can quickly and intuitively judge the appearance of the electronic products under test, and help the inspectors quickly judge the types of hidden electronic products.

  • Strong Semiconductor Recognition Ability: Built-in spectrum analyzer supporting second and third harmonic detection can quickly and effectively identify devices and devices containing semiconductors.

  • High sensitivity: In particular SIM card devices have a high density of intelligence, which ensures that secret books and mobile communication devices can be quickly detected.

  • Low false positive rate: The built-in optimized radar detection algorithm greatly improves the detection capability, and the false alarm rate is very low.

  • Safe and reliable: The characteristics of the equipment meet the requirements of electromagnetic radiation and are absolutely safe to the human body.

  • Flexible and simple operation: The interface is simple and intuitive, the keys are few and concise, and it is easy to operate manually.


TypeParameterTechnical index
Nonlinear Junction ParametersFrequency band2400MHz
Frequency range2.404 GHz - 2.472 GHz
Receiving 2nd~3rd Harmonic Range4.808 GHz-4.944 GHHz,
7.212 GHz-7.416 GHz
Pulse mode transmit power (maximum)0~4W (ERIP)
Receiving sensitivityLess than -140dBm
Adjustable range of transmitting power0.05-1W
Receiving dynamic adjustable range30dB
Battery Working Time in Maximum Power Pulse Mode5 hours
Thermal Imaging ParametersArray format160x120, continuous scanning
Pixel size12 um
Thermal imaging sensitivity< 50mK (0.050 C)
FOV-horizontal57 ⁰
FOV-diagonal71 ⁰
Lens typeF/1.1
Other  Parameters
Battery typeReplaceable lithium battery, standby for 4 hours
Charging timeFast charging 2.5 hours/block
Interactive interfaceLCD Displays Received Harmonic Signal Intensity
Audio prompts are supported and headphones can be connected.
Supporting Vibration Tips
LCD Display Imaging of Measured Objects
Detection distanceGPS module: 400-500mm
Mobile phone: 180-220 mm
Product size633(L)*111(W)*250mm(H)
Outer box size690(L)*330(W)*180 mm(H)
Product weight1.6kg
working temperature(-)20 ~ 45 degree
Working humidityNo more than 85%, no condensate

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A Glance at DT-830 Thermal Imaging Non-linear Junction Detector

DT-830 Thermal Imaing Non-linear Junction Detector from iSecus-P1
DT-830 Thermal Imaing Non-linear Junction Detector from iSecus-P2

Performance Advantage: 

A: The receiving sensitivity of DT-830 reaches -140dBm

B: The Operating temperature Range of DT-830 can meet -30–55℃

DT-830 Thermal Imaing Non-linear Junction Detector from iSecus-P3

DT-830 Thermal Imaging Non-linear Junction Detector Demo Video

Technology Introduction of Non-linear Junction Detector

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