Listen-Aider Sound Amplifier (Stethoscope)
You are able to listen through thin walls, doors, windows, etc. Highly sensitive pre-amplifier with electret microphone capsule ready to be plugged in with a headphone.
Kit set: to solder yourself
Operating voltage: 9VDC
Power consumption: 10mA
Dimensions: 63mm x 54mm
While stock lasts
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