This is a tiny but long range (800m in open field) surveillance wall microphone. Because it is dimensionally small, it is ideal for installation in junction boxes or wall sockets. And it can be directly connected to a 220V AC mains.

We can modify NOKIA and SIEMENS mobile phone series. The telephone is programmed with a telephone number and when anyone calls the spy phone, it rings and operates as a normal telephone but when the phone is called using the telephone with the number that was previously programmed into the spy phone,

This UHF surveillance microphone or transmitter has been installed in a conventional cellphone battery and hence cannot be easily found. With its anti annoyance filter, it gives exceptional sound quality.

This inventive device combines a normal functioning USB mouse with a microphone. The transmitter takes its power from the USB port and automatically starts transmitting when computer is switched on.