NInE-ROnG Self-Powered Tachometer Hour Meter with Maintenance Alert – 8 Modes for 2/4 Stroke Engines, IP65 Waterproof, Backlight Display, for Lawn Mower, Generator, Marine, Dirt Bike & Gas Equipment

• HOUR METER----Tracking the total hours of the engine in real-time. When the engine is turned off, the display will show the total running time of the engine and remain visible. TOT hours cannot be reset; Maximum hours: 99999H.There is also a resettable job timer
• TACHOMETER---- Accurately record the engine speed when the engine is running,help adjust the engine idle speed; program for different engine firing patterns,contains 8 programmable RPM types,RPM range is 0-20000 RPM, Record the max speed and can be reset. You can also set a alert RPM and an optional refresh rate of 0.5/1s.
• MAINTENANCE REMINDER---- Programmable maintenance interval in countdown mode,When the maintenance interval time is reached 0,the "SVC" icon will flash.Maintenance interval range: 0-200H.
• REPLACEABLE BATTERY---- Built-in CR2032 battery, long battery service life.The battery capacity icon is displayed in real time. When the battery is low, the battery icon will flash to remind you to replace the battery in time.
• OTHER ---- Easy to install; Contains detailed user instructions; Two backlit displays: red and green;Surface waterproof rate: IP65; patent, CE ROHS certification; 2-year warranty

Jayron JR-HM032R Self-powered engine digital maintenance reminder tachometer/hour meter includes chronograph, tachometer, service timer, Resettable JOB timer, 8 Programmable firing patterns,Programmable maximum RPM Alarm ,Programmable RPM refresh rate,repalceable battery Icon and Surface waterproof design. Product Features: 1 Hour Meter ▶ When the engine is off, the display shows the total running time of the engine and remains visible ▶ Total Hours reading displays from 0-99999H,0.1/1H accuracy. ▶ TOT hours cannot be reset, but will be cleared automatically when the max value is exceeded ▶ JOB timer can be reset 2 Service timers (SVC) ▶ Programmable maintenance interval is 0-200 hours,0.1H accuracy ▶ Countdown maintenance reminder, when the time is up, the ‘SVC’ icon flashes 3 Tachometer ▶ The max speed is 20000RPM.Record the RPM accurately while the engine is running, it can be reset ▶ Programmable RPM alarm, warning icon flashes to warn that the engine speed is out of range.Range:1000-20000RPM,10 RPM accuracy ▶ Programmable RPM update refresh rate: 0.5S/1S ▶ 8 programmable firing patterns 4 Works on: Suitable for all types of gasoline engines: ▶ Note: Some 4 stroke 1 cylinder also choose 1P1R.