BF-GW/III Wall Listening

　　Brand: Shengbo Blue

　　Product Qualifications: Test Report, Software Copyright

　　Product Overview

　　The wall listening system features clear sound quality and simple operation. It has been widely used by police and security departments in the UK and worldwide; its effectiveness has been unanimously recognized by police professionals, and it is one of the reconnaissance devices strongly promoted by the British police; the external sensor is connected to an audio amplifier, which has independent volume control on the left and right channels, and also provides external recording function; it provides accurate, sensitive, and high-clarity listening effects, making it a leader among similar products. It can listen through buildings such as walls, roofs, and floors. In places where hostages are being held, this stereo wall listening device can be used as a rapid listening device for special forces

　　monitoring equipment, and is also an essential product for military and police forces, criminal investigation, and technical investigation departments for investigation and counter-investigation.

　　Main Features

　　* Vibration transmitted by the impact sensor is amplified by an ultra-low noise amplifier, allowing even very faint sound signals to be heard.

　　* Threshold frequency, amplification, and microphone can be selected independently to ensure optimal monitoring.

　　* The gain of the amplifier can be steplessly selected via gain control.

　　* Audio input: 2-channel microphone input, 2-channel through-wall probe input

　　* Audio output is a 3.5" interface (stereo)