... built-in antenna (GSM, GPS) design Built-in switching power supply, wide voltage input range Built-in vibration sensor, to ... be connected for emergency calls for help An external microphone, remote voice monitoring function Built-in backup battery, illegal cutting line to ... -36 VDCLED indicatorThree LED indicator: GPS-blue, GSM-green, Power-redDimensions98.0(L)× 52.0(W)× 15.0(H)mmWeight80gOperating ...