Lightweight Wall Listening Device Adjustable Threshold Frequency 3.5" Standard Interface
|Place of Origin:||CHINA|
Payment & Shipping Terms:
|Minimum Order Quantity:||1 set|
|Price:||USD/Set FOB shenzhen|
|Packaging Details:||carton case|
|Delivery Time:||20 working days|
|Supply Ability:||10 sets per month|
|Listening Efect:||Clear||Threshold Frequency:||Adjustable|
|Amplifier Gain:||Infinitely Adjusted||Recording Function:||Automatic Recording|
|Headphone Output:||3.5” Standard Interface||Recording Output:||Built-in Recording Module, Real-time Recording By USB External Dedicated Recording Memory|
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Stereo Wall Listening Device Via Board / Plate
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.
● High Detection sensitivity.
● The Threshold Frequency,gain of the amplifier and microphone are adjustable.
● Channel 1, channel 2 separately or simultaneously.
● Built-in recording function
|Dimension||MCU(main control unit): 131×125×42mm; 41×18×15mm|
|Power Supply||Built-in 9V battery|
|Battery Working Time||5 hours without recording; 4 hours with recording|
|Audio input||Left and right double track|
|Audio output||Left and right output simultaneously, or left and right output separately|
Gain adjustment, low frequency, high frequency filter adjustment
and volume adjustment
|Headphone output||3.5” standard interface|
|Recording output||Built-in recording module, real-time recording by USB external dedicated recording memory|
|Recording memory||16GB (continuous recording about 500 hours)|