Master invigilator Hesky-A wireless headphone signal detector

This model has been discontinued, the replacement model is K305

1、 Product Introduction:

Using invisible wireless headphones, mobile phones, and intercoms to cheat in the exam room has become a common way of cheating in recent years. Due to the previous inability to effectively detect invisible wireless earphones, this cheating method is becoming increasingly rampant. This product can detect the user of invisible wireless earphones in a timely and accurate manner, and determine the specific location where they are wearing them (such as whether the signal transmission device is on the waist or chest, etc.), integrating monitoring and positioning..... A high-tech electronic product that integrates four major functions.

This product adopts digital intelligent design, with an effective detection range of 60-100 square meters. When the invigilator turns on the detector switch, once someone uses invisible headphones in the examination room, the signal strength indicator on the detector will change significantly, thus achieving real-time monitoring of the examination room. Supervisors can hold this product and move around, quickly locate the signal source based on changes in signal strength indicators, and find cheaters. They can also wear the dedicated headphones that come with this product when wireless headphone signals are detected.

This product has the same detection and positioning capabilities as other wireless voice communication devices such as mobile phones and walkie talkies, but does not have monitoring and recording capabilities. The detection rate of current popular wireless voice communication cheating tools can reach 100%, with a false alarm rate of 0.

This product is only a monitoring device that uses passive detection mode and patented technology for magnetic detection. It does not emit electromagnetic waves, so it will not interfere with any wireless communication facilities and equipment, nor will it produce any harmful radiation to the health of candidates.

2、 Working principle:

The invigilator (invisible headphone detector) adopts a passive vibration magnetic field detection mode, which detects the signal source by intercepting the strong magnetic vibration signal generated by the wireless communication device during operation. By displaying the detected signal strength, it determines the distance from the signal source (cheating device).

display mode

beam.

Main detectable devices:

Invisible wireless earphones (receiving devices such as bezel style, wallet style, cigarette box, card dispenser, rubber, etc.), walkie talkies, and other wireless voice communication devices.

Detection frequency:

Sensitive to magnetic field signals ranging from 30 Hz to 20000 Hz, the main detection frequency is concentrated in the voice and audio frequency range of 85 Hz to 2000 Hz (including low-frequency magnetic fields radiated by high-frequency communication tools such as mobile phones and walkie talkies).

Monitoring scope:

Can monitor signals within 60-100 square meters.

定位精度：

The false alarm rate for invisible wireless earphones currently used in society is 0.
When determining the cheater, the position error of the cheating device worn by the cheater can be accurately located within 5 centimeters. In addition, the enhanced invigilator can also detect which ear the cheater is wearing invisible headphones in 3 centimeters away from the ear without contact.

power supply

Powered by 2 No. 5 batteries for easy mobility and portability.

Security:

Due to the fact that most electromagnetic wave emitting devices, except for invisible wireless earphones, use high-frequency modulation mode for transmission, invigilators can only monitor the low-frequency audio magnetic field signals emitted by invisible earphones while detecting. They cannot monitor the communication content of high-frequency communication devices such as mobile phones and walkie talkies, and will not interfere with others' privacy.

The invigilator is just a monitoring device that uses passive detection mode and patented technology for detection. It does not emit electromagnetic waves, so it will not interfere with any wireless communication facilities and equipment, and will not produce any harmful radiation to the health of candidates. Its powerful functions will effectively prevent candidates from cheating in the exam room using modern electronic communication tools such as invisible headphones, mobile phones, intercoms, etc.

In order to better serve users, the research team of invigilators continues to explore and upgrade their products. We are now launching the Hesky-A invigilator.


3、 Product image:

4、 Product parameters: