This voice transmitter is one of the most sophisticated listening devices ever. Barely larger than a box of matches, this is a GSM-based Triband listening device that will operate with unlimited range in any global Triband area (Europe, Asia, USA and most of the world).
This unit has a built-in voice-activated microphone and a wired motion sensor. As soon as noise or movement is detected the audio surveillance unit will send a text message to any one of 3 pre-programmed telephone numbers. The device will telephone each of the first two numbers in turn until one of them is answered and send a SMS message to the third.
The user can call into the listening device at will to monitor surrounding noises or conversations. All the functions, including microphone sensitivity, can be remotely set by sending the unit a text message.
The listening device package comes complete with 2 extension microphones, one PIR to detect movement in the surrounding area, a re-chargeable battery and a charger/power supply. This does not include a GSM SIM Card.