the JX1002 engine hour meter a self-powered,induction LCD hour meter,widely used on generator,lawn ower,motorcycle,car,truck etc ... is used to record working hours for testing engine R Speed with the Gasoline engine, ATV, Motorbike, Motorboat.2.Signal input 1. Signal ... working 100 hours, it has prompted to change gasoline, flashing display 'OIL' an hour.3. Display flashing and warning time can be ...