High Strength Hy929 Wall Microphone Voice Amplifier For Water Oil

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Works on wooden walls, doors, windows, steel plates, etc.
Highly Sensitive, carefully adjust audio slowly, as not to cause discomfort to your .
This audio gadget works by amplifying the vibrations of audio.
When people are talking in a room their voices are simply a waveband, and depending on how loud they are talking, the waveband travels short and long distances which are picked up and amplified by this device.
The volume of the sound can be adjusted, including probes, probes, built in batteries, etc., which can be used repeatedly. This product is being sold as an investigative tools for law enforcement or licensed investigatorsSpecification:Model: HY929
Material: ABS Metal
Current Consumption: 10mA
Battery: Lithium battery 3.7V batteries
Probe Sensitivity: 10 db
Maximum Audio : 20000X
Answering method: Headphones or can be connected to 16 speakersSize Chart:Size: approx. 6x4x2cm /2.36x1.57x0.79inchPackage Includes:1 Piece Detector
1 Piece Plug (UK)
1 Piece Circular probe
1 Piece probe
1 Piece USB Cable
1 Piece Headphone
1 Piece ManualNote:1. Please allow slightly error due to manual measurement.
2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.
3. Wish you a wonderful online shopping!Wall Microphone;wall amplifier listening devices sound amplifier;ear listening device long distance hearing device;hear through wall wall listening device Voice;wall microphone voice recorder sound devices;contact microphone microphone High Strength
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