HY-919 High Sensitive Wall Detection Listening Monitor

A partition which can help you hear conversations through walls and other barriers. Strong penetrability and high sensitive, let you hear the sound from the next room fully. Signal receiving by sonde only. With a little black box, easy to be collect. With build-in rechargable li-battery.Highly Sensitive, carefully adjust audio slowly, as not to cause discomfort to your ear-buds.

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Function:A partition which can help you hear conversations through walls and other barriers
Main features:
- Strong penetrability and high sensitive,let you hear the sound from the next room fully
- Signal receiving by sonde only
- With a little black box,easy to be collect
- With build-in rechargable li-battery
Apply to:
- Business monitor
- Intelligence forensics
On-board Buttons/Slots:
- 3.5mm Earphone Jack
- ON/OFF Switch Button with volume Dial
- The charger USB hole
Operation:
- the end of the sonde must be closed to wall
- turn on the device,and adjust the volume and the Shift still hear the voice most clearly
Highly Sensitive, carefully adjust audio slowly, as not to cause discomfort to your ear-buds
Battery type: 3.7V lithium-battery
Penetrability: Cement wall, Steel wall, wooden wall, iron wall, glass and air brick
Listening Devices: Headphones
Materials: Metal case with Internal Sound Amplifier
Approved: CE / FCC
After Sales Service: 1 Year Warranty