NInE-ROnG Self Powered Digital Tachometer Hour Meter,Inductive Maintenance Waterproof Backlit Shutdown Tach/Hour Meter,Battery Replaceable,for Lawn Mower Tractor Generator and Gas Engine - NINGBO NINE-RONG ELECTRONIC TECHNOLOGY LIMITED, FD-HM032A

• Hour Meter----Accumulates the total of hours of engine operation, which cannot be reset, the maximum hours is 99999H. there is also a resettable single timing channel "JOB"，JOB range：0-99999H. Tachometer----Accurately records the RPM when the engine is running. Programmable for different engine ignition modes, contains 8 firing patterns: 1P1R/1P2R/2P1R/3P1R/3P2R/4P1R/5P2R/6P1R. RPM range: 0-20000 RPM. Records the maximum RPM.You can also set a alert RPM and an optional refresh rate of 0.5/1s. Maintenance Reminder----Helps to remind the engine to perform maintenance, programmable maintenance intervals in countdown mode, SVC setting range: 0-200H. When the maintenance interval reaches 0, the "SVC" icon will flash to remind the engine. Backlight----This product has 2 colors of backlight: red and green. The LCD screen displays red backlight when warning . the green backlight can be set to be always on,turn off or automatically adjusted and the backlight can help you to read the data better in the dark environment. Others----Built-in replaceable battery CR2032. the product can be shut down, after shutting down the data is automatically saved. Waterproof rate: IP65. Single screen display a function, if there is no operation on other screens for more than 10 seconds, it will automatically return to the main screen.