Equipped with various protection functions Highlight digital tube displays measurement value Can display ECU alarm fault code Panel buttons to set and modify system parameters Equipped with data remote monitoring function GM50C MK2: reads engine parameters through CAN interface and built-in J1939 protocol, has alarm protection function, and modifies parameters through buttons; The engine speed can be controlled through the buttons on the panel Parameter display Engine speed; Engine oil pressure; Engine oil temperature; Engine cooling water temperature; battery voltage; Accumulated working hours. Protective function Overspeed protection; Low oil pressure protection; High oil temperature protection; High water temperature protection; Low battery voltage alarm; ECU alarm. Range and accuracy Battery voltage measurement accuracy: error ≦±1% (within range); Accumulated time range: 0-999999 hours (minimum recording 0.1 hours); Power supply: DC8~36V; Power consumption: MAX1.5W; Alarm output: Passive contact output, maximum DC1A; Operating environment temperature: -20℃~65℃; Storage environment temperature: -40℃~85℃; Protection level: IP54 (front panel after installation); Color: Black Material: ABS Package Contents: 1 x RPM Oil Pressure Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.