Features 1、Timing Function: Record the total running time of the engine, and the total time cannot be reset. The timing range is 0‑999999H, the timing accuracy is 0‑9999.9H is 1min, 10000‑99999.9H is 0.1H, and 100000‑999999H is 1H. There are 2 groups of single timing, used to record the time of a single operation of the engine, which can be reset. 2、Maintenance Reminder Function: The maintenance time can be manually set according to the maintenance requirements of the engine. The maintenance time is displayed in a countdown, and 2 groups of maintenance times can be set. The setting range is 0‑250H. The display accuracy is 1min. Reminder method: When the countdown is 0, SVC/SVC1 flashes, and the red backlight reminds. 3、Engine Speed Display: After the engine ignition signal is detected continuously, the main interface displays the current engine speed. The speed range is 0‑25000RPM. 9 kinds of engine strokes can be selected, the default is 1P1R. The setting range of overspeed reminder is 100‑25000RPM. When the speed exceeds the set value, the current speed will be displayed, and the red backlight will be on. 4、Voltage Display Function: Display the current voltage of the power supply in real time, you can set the overvoltage reminder or turn off this function. The overvoltage setting range is 10‑30V, when the voltage exceeds the set value, the current voltage will be displayed, and the red backlight will light up 5、Over Temperature Reminder: The current temperature of the engine is displayed in real time, which can be viewed by pressing the button, and an over temperature reminder can be set. The over temperature reminder range is ‑20°C‑300°C (‑4°F‑572°F). When the temperature exceeds the set temperature, the current temperature will be displayed, and the red backlight will turn on. Two temperature units can be switched between Celsius and Fahrenheit. 6、Clock Function: LCD displays the current time, and the display method is 24H system. Green backlight display, normal use in sunlight or low light conditions, with three modes: automatic, long bright, and backlight off. Built in button battery and external power supply, the battery can be replaced. Two display systems are available for users to choose from. 7、Wide Application: Widely used in lawn mowers and other garden machinery; rice transplanters and other agricultural machinery; construction vehicles, excavators and other construction machinery; , yachts and other shipbuilding industries; as well as generators, dehumidifiers, air compressors, UV lamps, air purifiers, industrial vacuum cleaners, etc. Specifications: Item Type: Tachometer Material: ABS Power Supply Voltage: 8-30 (V) Timing Range: 0-999999H Single Timing: 0-999999H Maintenance Range: 0-250H and OFF Timing Accuracy: 1MIN/0.1H/1H Speed Range: 0-25000RPM Overspeed Reminder: 0-25000RPM Refresh Rate: 0.5S Battery: 1 button cell CR2450 3V 540mAh (built in) Speed Accuracy: 10RPM Overpressure Reminder: 10-30V Temperature Range: -20°C-300°C (4F-572F) High Temperature Reminder: -20℃-300℃ Display Mode: LCD Waterproof Grade: IP65 Fitment: Widely used in garden machinery, agricultural machinery, construction machinery, road machinery and other equipment that needs to be powered on and timed. Package List 1 x Hour Meter 6 x Cable Tie 1 x Manual 1 x Harness