DIY HY929 High Strength Wall Microphone Voice Listen Detector for Engineer Water
Work on wooden walls, doors, windows, steel plates, etc.
Highly sensitive, please adjust the o slowly and carefully to avoid discomfort to your earbuds.
The o gadget works by amplifying the vibration of o. When people chat in the room, their voice is only a band, and according to the size of they speak, the band will travel through short and long distances and be amplified and amplified by this device.
Colour: Black
material: metal
Package Contents:
1 x Detector
1 x USB Cable
1 x Circular probe
1 x Needle probe
1 x Headphone
1 x Chinese and English manual
Highly sensitive, please adjust the o slowly and carefully to avoid discomfort to your earbuds.
The o gadget works by amplifying the vibration of o. When people chat in the room, their voice is only a band, and according to the size of they speak, the band will travel through short and long distances and be amplified and amplified by this device.
Colour: Black
material: metal
Package Contents:
1 x Detector
1 x USB Cable
1 x Circular probe
1 x Needle probe
1 x Headphone
1 x Chinese and English manual
