Item Type: Racing Professional Instrument Material: ABS OBD2+GPS+Gradiometer Smart Meter is Used for: Display: Vehicle Data Such as Vehicle Speed, Engine Speed, Battery Voltage, Fuel Consumption, Coolant Temperature and Oil Temperature. Alarm Function: Exceeds the Programmable Speed or RPM Related Warning. Clear Fault Code: Clear Fault Code Function 3 Modes: OBD2 Mode, GPS Mode and Inclinometer Mode Use Global Satellite Positioning (GPS + Beidou Altimeter) OBD2: J1939 Protocol Standard MEM Level Meter: Outdoor Off Road Camping Package List 1 x Host 1 x Manual 1 x Connection Line 1 x Rocker 1 x Install The Wrench 1 x Paste Glue By default, OBD2+GPS mode is displayed at the same time. If your car does not have OBD2 protocol, please switch to GPS mode, then only GPS function will be displayed. 1FEATURES: Display vehicle data such as vehicle speed, engine speed, battery voltage, fuel consumption, coolant temperature and oil temperature. 2CLEAR FAULT CODE: Clear fault code, clear fault code function. MEM level meter: outdoor off road camping. 33 MODES: 3 modes, OBD2 mode, GPS mode and inclinometer mode OBDII system. OBD GPS Gradiometer all in one machine, full LCD instrument. 4SPLIT SCREEN DISPLAY: The host computer can be connected to the slave computer to display on separate screens, and the interface can be freely combined and switched for various data at a glance. 5GLOBAL SATELLITE POSITIONING: Use global satellite positioning (GPS Beidou Altimeter). obd2, J1939 protocol standard.