... stable,extendible design GPS/GLONASS optional I/O,com ports Bluetooth,WIFI,OBD RS3000 is an intelligent multifuncational GPS vehicle tracking ... when installed.RS3000 can be customized to on its hardware, firmware and many optional accessories applied in different conditions to meet ... GPS vehicle tracker /OBD tracker/ car tracking system(RS3000), to Bluetooth,WIFI,OBD,RS232