Through the "RS232 with 4 pin connector" interface of ATrack AK7(S) tracker, can increase the technical functions and dispose of more telematics data if connect any of the follows external components: (RFID reader & Tag, CMOS Camera, Garmin PND (FMI 2.0), OBDII cigar power cable, ATrack CAN solution). AK7(S) allow manage the driver identification with iButton, control the trailer ID, connect a temperature sensor using the "1-Wire" interface of ATrack GPS vehicle tracker. You can config ATrack AK7(S) to that send data in the (TCP/IP - UDP/IP - SMS) protocols and locate AK7(S) using the ATrack online server, sending text messages with commands via SMS or from an external tracking management platform (changing the IP/port). For protect your vehicle driver´s, can connect to AK7(S) tracker an "panic button" for generate S.O.S emergency messages when the driver detect any danger and receive notifications in your mobile phone or in the tracking management platform. An interest function of ATrack AK7(S) GPS vehicle tracker, is that can firmware upgrade remotely via (OTA - Over the Air) without uninstall AK7(S) of your vehicle, also is possible firmware upgrade or change parameters through a "RS232" cable.