Beijing Heweiyongtai Sci & Tech Co., Ltd.
Beijing Heweiyongtai Sci & Tech Co., Ltd. Beijing Heweiyongtai Sci & Tech Co., Ltd. was established in the beginning of 2008. We are a hi-tech enterprise specializing in manufacturing and trading
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Listen Through Wall Device
Description
This two power transducers listen through wall device is popular in similar products nowadays, which can give listener the clearest audio information they are going to know and can receive and record analog sound signals (voice, footsteps, other sounds). This is a special amplifier that will pick up the slightest noise through solid objects like a wall, so you can hear and distinguish 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 to enable police, prison and so on.
Specification
Dimension (mm): 128×99×23
Weight: About 0.5kg
Power of Signal: 1mW
Frequency of Swing: @1KHz,6 Db (attenuation)
@300Hz,15 Db
Channel Attenuation Separation: >40 Db
Stereo Balance Control: ±10 Db
Range of Amplifier Dynamic: >60 Db
Power Wastage (50% Volume): 25mA
Battery: 4×1.5V AA battery
External (PSU N/A): 9~12V @mA supply power
Headset: 0.6Watt, 300 Ohms