You are able to listen through thin walls, doors, windows, etc. Highly sensitive preamplifier with microphone capsule and headphone. To be used for observing animals (e.g. mice), as baby-alarm etc. UB: 9V=.
Attention: It is prohibited on penalty to bug the conversations of other people as well as to eavesdrop on other flats through doors and windows!!!

Technical data:

• Operating voltage: 9 volt=
• Power consumption: < 100mA
• Output power max. 0.5 W at 8-ohm loudspeaker
• Board dimensions: approx. 57 x 57 mm