Inductive Tachometer Gauge Alert RPM Engine Hour Meter HM032B Backlit Resettable Tacho hour meters for Motorcycle ATV Lawn Mower Runleader RL-HM032B Self Powered Engine Digital Maintenance Reminder Tachometer contains tachometer, hour meter, service timers, job timer , Programmable max RPM reminder and backlit mode selection. Replaceable battery ,Shutdown function and waterproof design. MULTI-FUNCTION HOUR METER Include Tachometer(RPM),Hour Meter,Service Timers(SVCandSVC2), Resettable Job Timer(JOB) Convenient to view the data,help to manage your healthy engine. HOUR METER Help to track how many hours you put on the engine When engine is off, display shows total run time of engine and remains visible TOT hours are non-resettable with 0.1 hours accuracy Allows user to preset initial total hours to replace the old meter. MAINTENANCE REMINDER Programmable maintenance interval service timer(SVCandSVC2),countdown tracking service reminder time When SVC times reached,the warning icon will be flashed and backlight turned to red JOB timer used to measure the time of a particular work job, such as change oil,Air filter replacement etc,the value can be reset JOB and SVC readings can be viwed directly by related buttons. TACHOMETER Record your RPM value accurately when engine is running, help to adjust engine idle Different engine firing patterns can be programmed Programmable RPM Alert,Red backlight display and warning icon flashes Recording and recall engine MAX RPM Programmable RPM measurement range selection mode for improved RPM data accuracy. OTHER Easy to install Contains detailed instructions for use Green Backlit Display ,Programmable backlit mode Battery replaceable, User shutdown Data retained after shutdown Waterproof rate: IP65 CE ROHS certification 2-years warranty.