Digital tachometer, maintenance reminder, replaceable battery, automatic shut-off, suitable for ZTR lawnmowers, generators, tractors, marine ATVs, snowmobiles, and equipment.

Hour Meter ---- Contains the tachometer, hour meter, and service counters; helps you track the number of hours you have spent on your engine. The total number of hours can be reset; 0.1 hour accuracy

SERVICE REMINDER ---- Programmable service timer (SERVICE), countdown service reminder time; when the service time arrives, the service warning icon flashes as a reminder

TACHOMETER ---- Accurately records your RPMs while the engine is running, helps set the engine idle speed; can be programmed for different engine starting modes

REPLACEABLE BATTERY ---- Replaceable internal CR2450 battery, data retained after battery replacement; when the engine is stopped, the unit automatically shuts off after 2 minutes; Press the button to read the screen; data is retained after shutdown. Other: Easy to install; Includes detailed operating instructions; Waterproof rating: IP65; Patented, CE and RoHS certified, 2-year warranty.