Ear Listen Device Voice Monitor Wall Microphone Amplifier Through Wall

Welcome to my store, we have many kinds of price products, we launch new products every day, please follow my store and pay more attention, for more products, Please click on the seller information to enter our store to buy, we hope give you a pleasant shopping experience. Thank you and have a nice day!Description:HY929 High Strength Wall Microphone Voice Listen Detecotor for Engineer Water Leakage Oil Leaking Hearing for Repair
Works on wooden walls, doors, windows, steel plates, etc.
Highly Sensitive, carefully adjust audio slowly, as not to cause discomfort to your ear-buds
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.
This product is being sold as an investigative tools for law enforcement or licensed investigatorsSpecification:Model: HY929
Material: Metal
Colour: Black
Size: Approx.6 x 4 x 2CM/2.4 x 1.6 x 0.8 inchPackage Includes:1 * Detecotor
1* US Plug
1 * Circular probe
1 * probe
1 * USB Cable
1 * Headphone
1 * Use ManualWall Microphone;wall amplifier listening devices sound amplifier;ear listening device long distance hearing device;hear through wall wall listening device Voice Bug;wall microphone voice recorder sound devices;contact microphone microphone High Strength

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