In the digital inputs of AS3P(B) standalone GPS tracker can connect different external devices, for example: (button on/off, doors sensor, panic button for SOS emergency messages, etc...), contact with ATrack company to know that external device are compatible with AS3P(B). ATrack AS3P(B) can send data packet via "TCP/IP - UDP/IP - SMS" or also use an REST API to connect existing applications and offer 3 modes for real-time tracking: (sending commands with mobile phone text messages, using ATrack online server, from an external tracking management platform). With the "1-Wire" interface of AS3P(B) GPS tracker, you can manage: (the driver identification in their automatic vehicle dispatch via iButton, the mobile asset temperature connecting up to 2 temperature sensors), manage the hours of service of these two external components you increase the performance and safety of your mobile asset or your field service management control. ATrack AS3P(B) can be compatible with the Can Bus data reading, only need acquire the ATrack CAN solution and connect in the RS232 port, AS3P(B) send the telematics scheduled reports of Can Bus to ATrack online server or to external tracking management platform. ATrack has designed AS3P(B) standalone GPS tracker with a plastic casing that has (IP67 - waterproof and dustproof) certification, ideal to working in the mobile asset GPS tracking on service routes or fleet management on any extreme weather condition without fear to that AS3P(B) damage.