Jayron 2 Pieces Self Powered Digital Induction Tachometer Maintenance Waterproof Backlight Shutdown Hour Meter Battery Replaceable for Lawn Mower Generators Boat Outboard and Gasoline Equiment(2)

Jayron JR-HM032A 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 Product Functions: 1 Hour Meter (TOT) Function ?When the engine is off, the display shows the total running time of the engine and remains visible. ?The total hours max value is 99999H;Total Hours reading displays from 0 to 9999.9H,0.1H accuracy;Total Hours reading displays from 10000 to 99999H,1H accuracy. ?When the total exceeds the Max value 99999H,the value is cleared automatically. ?TOT hours are non-resettable.But automatic clearing when exceeding the maximum value. 2 Service timers (SVC) Function---- Countdown tracking time, Reminding maintenance,Such as Air filter Replacement ?Programmable maintenance interval time from 0-200H. ?When the maintenance time arrives,"SVC" icon will flash to remind you. 3 JOB timer (JOB) Function---- Used to measure the time of a specific job, such as changing the oil ?By operating the button display, the JOB running time of the engine can be displayed and kept visible. ?JOB timer reading displays from 0 to 99,999 Hours. ?JOB timer can be reset. 4 Tachometer Function ?When the equipment is working, the tachometer will record the RPM in real time currently ?Has 8 different Programmable firing patterns ?RPM range is 0-20,000 RPM,and RPM accuracy is 10 RPM;Max RPM can be reset ?RPM has two selectable refresh rates: 0.5/1s ?Programmable Alert RPM, red backlit display and warning icon flash to remind the engine speed is out of range 5 Others ?Built-in CR2032 210mAh.Battery replacement ?Backlight choice:L-Aut(adjusted automatically),L-ON,L-OFF ?LCD Screen size:16.8×40.8mm ?Patent,CE ROHS certification