Feature: 1. 4-in-1 display, can be freely matched with each group of functions (voltage and water temperature combination, voltage and oil combination, water temperature and oil combination, water temperature and oil volume, etc.). 2. Ultra-wide voltage operation, it can also work normally under 40V voltage. 3. With anti-shaked function of the fuel quantity, keep the normal display even if the car is bumpy or the oil float is open. 4. Quick setting function of the fuel quantity sensor makes it quick and convenient to select the existing vehicle model. 5. The self-learning function can match the resistance of the oil float of any model. 6. Using advanced single-chip technology, directly display the safety parameters of the car engine on the LCD screen. 7. Intuitive display, high accuracy, low power consumption, good stability and strong anti-vibration capability. 8. It has wide application, simple installation, long service life, and complete protection functions, which is currently the first choice for measuring various engine performances. Specification: Condition: 100% Brand New Item Type: Car Instrument Material: ABS + Brass Color: As picture shown Working Voltage: DC9-36V Working Environment Temperature: -40-50 ℃ Working Environment Humidity: 45% -75%RH Test Parameters and Alarm Points: Voltage Test Range: 9-39V Measurement Accuracy: ± 0.1% Alarm Voltage Lower Than 10V, 16-20V, Higher Than 31V Flashing Alarm Water Temperature Measurement Range: -10-120 ℃ Measurement Accuracy: ± 0.1% Flashing Alarm Above 95 Degrees Oil Measurement Range: 0-1.0mp Measurement Accuracy: ± 0.1% Flashing Alarm Below 0.1mp Oil Resistance Range: 5-1000Ω Measurement Accuracy: ± 1% Below 10% Flashing Alarm. Package List: 1 x 4-in-1 Instrument2 x Screw1 x Tape