The transmitter is designed and made in Israel, based on the secret services technologies. Each transmitter is tested and tuned in specialized laboratory by high skilled engineers. Small size and weight of the transmitter allow to install it using double sided tape on any part of glass. In spite of very small size the microtransmitter is powerful enough and catches even weak sounds at the distance of up to 10 meters from the glass and transmits the output signal away. It is necessary to remember that after finishing the work with transmitter the batteries should be removed from the battery holder and kept separately !!! The possible areas of Micro Wall Bug usage : Great baby monitor Home security device, etc... Ideal for surveillance, communications, anti-theft Wildlife watching And much more ... Specification : Operating Range: 100-200 meters Operating Frequency: 100-104MHz . 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) 120 hours Board Dimensions: 20mm X 10mm |