Resettable hour meter for tractors with backlight display1、TOT Recording: Help track how many hours the engine has been working. When the engine is turned off, the display shows the total running time of the engine and remains visible. And the TOT hours are not resettable. 2、JOB Timer: Used to measure the time spent on specific work, such as oil changes. To manipulate the relevant buttons, you can easily view the JOB timer. The JOB timer is resettable. 3、Tachometer Function: Displays real time RPM values and maximum RPM recall. Records the real time RPM value at engine is on. Various engine ignition modes can be programmed to make the RPM more accurate. 4、Application: Suitable for all types of gasoline engines. Applicable for outdoor power equipment, generators, agriculture, construction, machinery, vehicles, boats. 5、Installation: Easy to install, with included positive and negatibe cable, and you can following the user manual to plug and play.