This hour meter was specifically designed for non engine applications. Track the Service Life of Electric motors, Compressors, Trailers, ptos, Diesel Engines, etcMeter automatically switches on/off recording time by sensing vibration from the device in use.Do not use on Offroad Motorcycles because it will record time when you are trailering. Use our HR-9000-2 wireless meter specifically designed for Motorcycles.No Power Required sealed waterproof lifetime battery insidePreventative Maintenance bearings, chasis lubrication etcEasy Installation peel & stick, no wiring necessary. Just plug and play!Records & Displays to 9,999.9 hoursHour glass symbol appears & flashes on/off to indicatecounting time.Display Screen can be read with engine on or off.Automatic Roll overResolution: .1=6 minutes100% epoxy encapsulated. Waterproof.Warranty one year.Designed, Assembled and Tested in the USA. Made with Global and Domestic Parts.CE CertifiedPatentedUnit measures 2 1/8″ length x 1 1/2″ wide x 5/8″ high.UPC: 632194080652Note: See FAQs for additional information web page.https://www.hardlineproducts.com/faqs/Meter display has factory 5 digit (0195.5) code displayed until youenable (turn on) meter. This action is only required once. Push andhold button down for 6 seconds until code clears. Display will show0.0 Your meter is now ready for operation.