HM035A Digital Tachometer Tach Hour Meter Thermometer Temp Meter compatible for Lawn Tractor Compressor Generator Snowmobile Marine Jet Ski Pit Bike Theproductmathces one TS002-PT100temperaturesensor,has an electronic Russian instruction manual HOURS ---- Monitor the total run timeTOT and single working hoursJOB of gas engine, with ability to program previous hoursINT compatible for an replacement;Accomplish maintenance at recommend intervals to determine the due timeSVC;TOT & JOB hours range:0-999,99 hours;SVC timer range:5-1000 hours. RPM ----- Display the real-time RPM readout by vairous engine firing patterns setting to adjust engine idle speed; Alert channel compatible for revolution exceed reminder;Viewable highest revolution since the engine started; RPM measurement range: 0-25000RPM, Alert range: 100-25000RPM. TEMP ---- Keep eyes on engine current and maximum temperature at all the times by probe senorThe induction probe cannot be bent to avoid breakage; Remind the temperature exceed compatible for engine maintenance; Easy to switch between Celsius and Fahrenheit;Temp measurement & alert range: -20C~+300C-4F~+572F BACKLIGHTS ---- Default green backlight will help to use it at night or dim place, you can set the backlight mode by always-on, OFF and automatical modeOFF default, button to wake up as request;Red backlight will remind the engine RPM or TEMP exceed. OTHERS ---- Easy to mount it on proper position by stick-on, screw-on and extra bracketnot include, one-wire wrapping of spark plug compatible for signal detect 68.8inches, workable if shorten or extend to work right away;Favorable water and shock resistence; Battery capacity will be kept in good condition with insulation sheet during transport, it is repalceable;LCD shutdown also can extend the lifetime in vacant time. Specification 24 Hours clock time display. Internal replaceable CR2032 battery , Data retained after battery change. LCD window size :approx.1.620.67 inches Product size: approx.2.75X1.45X0.7 inches Accessories: cut-out sticker,3M velcro, cable tie,bolts,nuts,washer,CR2032 Battery,TS002 probe senor,user manual. Waterproof rate: IP67. With this hour meter, you can keep track of engine run time, Over-temperature alert remind you the engine temperature exceed to keep the engine healthy.which can help you schedule regular maintenance and avoid unexpected breakdowns. It also allows you to accurately track usage compatible for rental or billing purposes. In summary, the Digital Hour Meter is an essential tool compatible for anyone looking to accurately track engine run time. Its wide range of applications, compact size, waterproof rating, and long-lasting battery make it an excellent investment compatible for your equipment.