Hign-concerned Chemical:NONESpecial Features:Hour Meter/TachometerItem Diameter:3.7cmItem Weight:98gItem Height:1.3cmItem Width:3.7cmItem Length:7.5cmExternal Testing Certification:ceModel Name:RL-HM035ABrand Name:FoundownOrigin:Mainland ChinaMaterial:ABSHM035A Digital Tachometer Tach Hour Meter Thermometer Temp Meter for Lawn Tractor Compressor Generator Snowmobile Marine Jet Ski Pit Bike The product matches one TS002-PT100 temperature sensor,has an electronic Russian instruction manual HOURS ---- Monitor the total run time(TOT) and single working hours(JOB) of gas engine, with ability to program previous hours(INT) for an replacement;Accomplish maintenance at recommend intervals to determine the due time(SVC);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 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 senor(The induction probe cannot be bent to avoid breakage); Remind the temperature exceed 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 mode(OFF 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 bracket(not include), one-wire wrapping of spark plug 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 for rental or billing purposes. In summary, the Digital Hour Meter is an essential tool 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 for your equipment.