You can connect some external peripherical to AL1 GPS vehicle tracker through the built-in "RS232" port, some example of accessories for connect: (ATrack CAN module, OBDII with cigar power cable, Garmin PND FMI, CMOS Camera, RFID reader and Tag). The real-time tracking and hours of service control of ATrack AL1 tracker you can make it with 3 different modes: (from an external tracking management platform, sending commands with mobile phone text messages or using the ATrack server). In the vehicle that you install AL1 GPS vehicle tracker, can manage events of the "driving control" thanks to that detects accidents, impacts or any movement from the built-in 3-axis accelerometer. ATrack AL1 also offer different digital inputs and outputs on that you can connect some external devices: (relay for cut engine, a buzzer, panic button for SOS emergency messages). Through the "1-Wire" interface of AL1 model, also you can connect different hardware type with the ATrack tracker: (manage the temperature in real-time with an temperature sensor, use some iButtons, trailer ID), AL1 is it an economical alternative but that cover different requirements for GPS vehicle tracking.