B04 - Wall Spy Bug - Radio FM Transmitter hear through walls   (ID: B04)

Specification :

Operating Frequency: 88-92MHz . You can tune it easily by yourself

Microphone: Highly sensitive, high quality piezo-sensor

Power supply: 2 lithium batteries 2032 (3V)

Battery holder: for 2 batteries with a diameter 20mm

Battery Life: 5mA (apx) 50 hours

Board Dimensions: 20mm X 12mm