GSM Listening Adapter Device 

Fully Functioning Adapter fitted with our very latest GSM listening technology.
Monitor the room conversations from anywhere in the world. Just dial the sim card number supplied or fit your own sim card and the unit will silently switch on enabling you to listen to sound up to 30 feet from wherever the device is fitted.

Specification : 
 
Built in GSM Listening Device

Mains Powered for long term monitoring
Connects to any 110 ~ 240 volts mains supply
Good quality Mic
Quad band will work on any Mobile Network
Cable is 1.5meters
Can continuous working when connect the plug.