Through the (RS232 / RS485) interface of ATrack AK7V GPS tracker with microphone / speaker, you can connect the follows external peripherical: (fuel level sensor, RFID reader & Tag, CMOS Camera, Garmin PND, ATrack CAN solution), depending of your need can improve the features and dispose of more telematics data. Other interface that offer AK7V GPS vehicle tracker is "1-Wire", that allow manage: (the driver identification with iButton, the trailer identification, temperature control connecting a temperature sensor). ATrack AK7V offer 3 GPS tracking modes: (from ATrack server, using an external tracking management platform "need edit the IP/port", sending text messages with commands via SMS), any of the 3 modes is valid for the GPS vehicle tracking. Thanks to internal 3-axis accelerometer of AK7V GPS tracker that detect movement and impacts, you can improve the "driving control" of your vehicle. ATrack offer an extra option for that AK7V GPS tracker with microphone / speaker are compatible with (Bluetooth BLE), ideal to IoT applications and for pair different external devices without use any wire.