• -135dbm Sensitivity Junction Detector 7.4V 4W For secrets securityA
  • -135dbm Sensitivity Junction Detector 7.4V 4W For secrets securityA
-135dbm Sensitivity Junction Detector 7.4V 4W For secrets securityA

-135dbm Sensitivity Junction Detector 7.4V 4W For secrets securityA

Product Details:

Place of Origin: Jiaxing, Zhejiang, China
Brand Name: Zhejiang Zhongdeng Electronic Technology
Model Number: ZD-JD007
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Detail Information

Sensitivity: -135dbm Application Scene: Secrets Security
Working Voltage: 7.4V Max Transmitting Power: 4W
Working Frequency: 2.4GHz
High Light:

-135dbm Sensitivity Junction Detector


Junction Detector 7.4V


Junction Detector 4W

Product Description

-135dbm sensitivity junction Detector with 4.5h battery working time




ZD-JD007 is the latest generation junction detector of our company. It is able to detect any electronic device hidden in walls, floors, ceilings, lamps, furniture or containers. It has good sensitivity of -135dbm which provide effectiveness for detection mission. where these electronic devices are transmitting singers or not, they are detected and alerted by display, vibration and sound prompts. Then detector can focus on hidden targets.



Application scenes


It can be widely used in government, public security, prisons, justice, the military, education examination, business security and personal privacy protection and so on
Commercial security: Detect unauthorized electronic devices, such as eavesdroppers, cell phones, and SIM-containing devices, hidden in company boardrooms or secret offices
Public safety: detection of hidden and prohibited electronic devices in the safe area, such as detonators, remote controls, etc.
Personal privacy protection: residential, hotel and other hidden camera recording equipment, such as recording pens, cameras and so on


Product Characteristics

  • Strong semiconductor detect ability: With the 2nd and 3rd harmonic signal strength detection technology, it can quickly and effectively identify device and semiconductor materials inside it.
  • High sensitivity: The junction detector is equipped with built-in high gain antenna. It has long detection distance especially for SIM card devices. To ensure secret, mobile communication equipment will be detected quickly.
  • Flexible operation: The interface is simple and intuitive, with few buttons and easy manual operation.
  • Friendly interaction interface: Support visual graphical interface, bright display of power emission level, 2nd and 3rd harmonic graphics, easy to operate.
  • High cost performance: The most cost-effective, cost saving and excellent performance in the world.



Paramter Technical index
Battery working time

4.5h(Typical mode)

(Typical mode means 30% transmitting power, low receiving gain, and no vibration)

Product working frequency band


Receiving sensitivity Less than -135 dbm
Working voltage  7.4V
Frequency range  2.404-2.472GHz
Receiving 2nd-3rd signal harmonic range



Maximum transmit power  4W(EIRP)
Receiving dynamic adjustable range  30dbm
Battery type Lithium battery
Charging time


Through type-c interface

Interactive interface The screen displays the intensity of the received harmonic signal. Audio prompts are supported and headphones can be connected. Supporting vibration tips.
Detection distance

TF card: 120-200mm

Mobile phone: ( Iphone7: 80-120mm   Huawei P30: 150-200mm)

Product size 750(L)*114(W)*108mm(H)
outer box size 700(L)*330(W)*180mm(H)
Product weight 1.5Kg±0.05Kg
Operation temperature Optional battery:-30℃~55℃
Operation humidity No more than 93%, no condensate




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