Check the listing for details. Self Powered Engine Digital Hour/Tachometer ZTR Lawn Mower Tractor Generator. Condition: New. Listed at 12.00 USD. CE ROHS certification;2-years warranty. RL-HM011F Inductive tachometer with hour meter battery replaceable for all gasoline engine ATV UTV dirtbike motobike motocycle outboards snowmobile pitbike PWC marine boat waterproof . 【Accept bulk orders ---if you are a trader or need bulk orders, you can email us for a great discounted price】 Product Features: 1 HOURS FEATURE - Helps you keep track of how many hours you've put into your engine. When the engine is switched off, the display shows the total running time of the engine and remains visible.Total hour readings are displayed from 0 to 99,999 hours with an accuracy of 0.1 hour, The total hours can be reset.2 SERVICE FUNCTION - Countdown to track time and remind maintenance such as air filter replacement.Programmable maintenance interval from 0-99999 hours.When the maintenance time is up, the service warning icon will flash to remind.Countdown tracking service reminder time, 0.1 hour precision.3TACHOMETER FUNCTION ---- Display and read the current speed of the engine to help adjust the engine idle speed Accurately record the rotational speed of the engine when it is running. Programmable for different engine ignition modes. The tachometer display range is 0-20,000 RPM with a resolution of 10 RPM. RPMs Update time refresh rate: 0.5S.4 Others----Easy to install; Contains detailed instructions for use; Waterproof rating: IP65; Patented, CE ROHS certified; 2 years warranty. Product Specifications: Color: Black Resolution: 0.1HRS / 10RPMs Reading: 99,999.9Hrs / 30,600 RPMs Operating temperature: Standard -30°C ~ 85°C Battery life: 2-3 Years Cable length: Approx. 170cm / 67in Internal Battery: 1 * CR2450 550mAh Product size: 7.3 * 4.7 * 2cm / 2.9 * 1.9 * 0.8in Product weight: 50g / 1.8oz Package size: 7 * 7.2 * 4.6cm / 2.8 * 2.8 * 1.8in Package weight: 80g / 2.3oz Applicative Engine Type: 1 Cylinder 2 Stroke/ 1 Cylinder 4 Stroke/ 2 Cylinder 2 Stroke/ 2 Cylinder 4 Stroke/ 4 Cylinder 4 Stroke/ Application:This chronograph is suitable for outdoor power equipment, generators, agriculture, construction machinery, vehicles, boats, etc... For example: lawn mowers garden tractors riding mowers leaf blowers high pressure washers electric saws snow blowers brush cutting Grass Thread Trimmer String Trimmer Pressure Washer Portable Inverter Generator Motorcycle Dirtbike ATV UTV Scooter Paramotor Harley Dual Sport Bike Golf Cart Outboard Jetski Pontoonboat Mercury Raceboat Hovercraft etc...