Electronic listening device is a professional listening device that uses radio frequency technology to detect suspicious mechanical displacement devices in the target area. Electronic hearing devices can detect electronic pointer timing detonation devices and mechanical timing detonation devices hidden under various packaging covers. Electronic detonation devices include timing detonation devices made of electronic watches, pagers and various remote control devices. The electronic listening device supports local listening and remote listening functions. It can cooperate with drones and robots to realize remote control and distortion-free listening functions, which is convenient for the inspection of remote-operated explosive detonating devices in security inspection and detonation scenarios. At the same time, electronic listening devices can also be used as anti-reconnaissance security technology equipment to detect electronic eavesdropping devices and hidden video recording devices. It has the characteristics of high sensitivity, long detection distance, strong ability to penetrate packaging cover, and easy to carry and use.