This multi-function stereo listening through wall device can give listener the clearest audio information they are going to know. This is a special amplifier that will pick up the slightest noise through solid objects like a wall, so you can listen to what is happening on the other side. The contact microphone is a ceramic pin specially developed for converting vibration into audible noise. It has two powerful transducers together comprise an exceptional monitoring device. It is widely used in police, prison and intelligence department.
We are manufacturer in China, our factory has a competitive production capacity. We are professional and capable to provide 100 sets products per month, ship within 20 working days. And we sell goods to our customers directly, it can help you with omitting intermediate expenses. We believe with our strength and advantages, we can be a strong supplier to you. For the first cooperation, we can offer samples to you at low price.
● High Detection sensitivity.
● The threshold frequency,gain of the amplifier and microphone are adjustable.
● The gain of the amplifier can be infinitely adjusted.
● People can monitor with channel 1, channel 2 separately or simultaneously.
● Built-in recording function, it can record automatically when insert dedicated memory card.
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Dimension |
MCU(main control unit): 131×125×42mm; 41×18×15mm |
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Total Weight |
956g |
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Power Supply |
Built-in 9V battery |
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Battery Working Time |
5 hours without recording; 4 hours with recording |
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Audio input |
Left and right double track |
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Audio output |
Left and right output simultaneously, or left and right output separately |
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Audio adjust |
Gain adjustment, low frequency, high frequency filter adjustment and volume adjustment |
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Headphone output |
3.5” standard interface |
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Recording output |
Built-in recording module, real-time recording by USB external dedicated recording memory |
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Recording memory |
16GB (continuous recording about 500 hours) |