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[China]
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Address: Room 414, Number 113,Gucheng west road,Shijingshan Diistrict,Beijing,China.
Contact name:Gerrywang
Beijing Heweiyongtai Sci & Tech Co., Ltd. |
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Listen Through Wall Device
Description
This two power transducers listen through wall device is the most updated one in similar products nowadays, which 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 to enable police, prison and so on.
Specification
| Power of Signal | 1mW |
| Frequency of Swing: | @1KHz,6 Db (attenuation) @300Hz,15 Db |
| Channel Attenuation Separation | >40 Db |
| Stereo Balance Control | ±10 Db |
| Non-linear Harmonic Distortion Coefficient | >0.5%
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| 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 |
| Dimension (mm) | 128×99×23 |
| Weight | About 0.5kg |
