Car tracker «GPS Guard" (or "GLONASS Guard") has an integrated GSM / GPRS-modem, two independent universal inputs (with support for digital and analog sensors). On board battery that provides 12 hours of continuous autonomous operation. At stops the device "sleeps", this can significantly increase the battery life and (device working even if discharge of the battery in the car).
In new version of the device «GPS Guard" became possible to connect a wired microphone. «GPS Guard" is available in two versions, both the external and the internal GSM antenna.