Audio Surveillance System with Amplifier Listen Through Walls

DescriptionThis 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  prison and so on.    Technical Specifications  Power of Signal1mWFrequency of Swing@1KHz,6 Db (attenuation) @300Hz,15 DbChannel Attenuation Separation>40 DbStereo Balance Control ±10 DbNon-linear Harmonic Distortion Co-efficient>0.5%Range of Amplifier Dynamic>60 DbPower Wastage (50% Volume)25mABattery4×1.5V  AA battery External (PSU N/A)9~12V  @ mA supply powerHeadset0.6Watt, 300 OhmsDimension (mm)128×99×23Weight500gramCompany Introduction In 2008, Beijing Hewei Yongtai Technology Co., LTD was established in Beijing.Focus on the development and operation of special safety equipment, mainly serve the public security law, customs and other national security departments. In 2010, Jiangsu Hewei Equipment Manufacturing Co., LTD was established in Guannan.Covering an area of 9000 square meters of workshop and office building, it aims to build a first-class special safety equipment research and development base in China. In 2015, a Reserch and development center was set up in Shenzhen.Focus on the development of special safety equipment, has developed more than 200 kinds of professional safety equipment.  Jiangsu Factory  Shenzhen Research Centre Overseas Exhibitions Certificates   Staff Photo  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1