Micro GSM Audio Transmitter with Voice Activation

The GSM transmitter at unlimited distance is very small (40 x 30x 10 mm) for this is perfectly suited to many uses of surveillance and monitoring. It includes an internal rechargeable battery and its operation is very simple: just insert your SIM card in its housing and it's ready for use. So there is no need to waste time to get to work quickly. To listen it's enought to call the number of the SIM card. It's possible to start the device with voice activation. So will the transmitter to call the preset number when it hears a voice or sound. This feature is great for saving energy. The setting of the various functions can be programmed remotely through the sending of simple SMS commands. Technical Specifications Network: GSM 900/1800/1900 Power consumption: 20mA (stand by), 200mA (calling) Sensitivity:-75db Microphone Sensitivity: 4 levels Lithium Battery: internal, rechargeable, 3.7V, 550mA