Through the "1-Wire" interface of ATrack AS11 NB / IoT GPS tracker, is possible connect and manage: (the driver identification with iButton, trailer identification, connect a temperature sensor to control temperature in real-time). Also integrate "RS232" interface, on where you can connect to AS11 asset tracker: (RFID reader & Tag, ATrack CAN solution to extract Can Bus data), contact with ATrack to know that other types of external hardware can connect to AS11 tracker. The GPS asset tracking with ATrack AS11 tracker can make it of 3 different modes: (from ATrack online server, sending text messages with commands via SMS, using an external tracking management platform). With AS11 waterproof GPS tracker and his (OTA - Over the Air) function, you can reduce costs in maintenance services and firmware upgrade of ATrack tracker remotely without uninstall AS11 of your mobile asset. ATrack AS11 can be compatible with "Bluetooth 4.1 BLE" connectivity, these function is an extra option that you required to acquire, with the Bluetooth connectivity you can pair different external devices with AS11 tracker without connect any extra wire.