Ear listening through the wall device bug eavesdropping on the wall microphone voice bug
Wall listening
Dedicated carriage return with secret monitoring device
Easily listen to all actions
High
-sensitivity metal probe
Comes with headphones, small and convenient, easy to hide.
Simple operation, close to doors, windows or walls.
Able to make sounds from wood/brick walls, windows or doors or armor plates.
High sensitivity detector.
Can be used as a recording pen.