Product Description: Quantity: one piece Product Features: Hour Meter (TOT) Features ---- Help to track the number of hours the engine has been running. When the engine is off, the display shows the total engine running time and remains visible. Total Hours reading displays from 0 to 999.99 hours, timing accuracy is 0.1H. TOT hours are not resettable. 2 Tachometer Features----Value Display real-time RPM value. Record real-time RPM value when engine is on. Suitable for 1P1R engine ignition pattern, help idle adjustment of the engine. Tachometer display from 0-30600RPM with 10 RPM resolution. 3 Other Features Product Dimensions: 54mm 36.5x14.5mm. LCD screen size: 24x10mm The standard length of inductive wire is 1.1m (UL1107 AWM 22AWG), functions are workable when the wire is shortened or extended. Easy to install, including positive and negative cable, inductive cable, cable clamp, bracket, user manual. CE RoHS certification. Waterproof rate: IP65. 4 Works on: Suitable for all types of gasoline engines: 2 stroke 1 cylinder and 4 stroke 2 cylinder gasoline engines. 5 Applications: This hour meter is suitable for outdoor electrical equipment, generators, agriculture, construction machinery, vehicles, boats, etc. trimmer Pressure Washer Portable Inverter Generator Motorcycle Dirtbike ATV UTV Scooter Paramotor Harley Dual Sport Bike Golf Cart Outboard Jetski TACH/HOUR METER ---- It contains 2 kinds of simple functions for gasoline engine : TOT hours and RPM value in real time. TOT Hours (TOT)----Helps to track engine running hours; Display total operating hours when engine is off; TOT hours are not resettable; Timing range: 0-999.99 hours, 0.1 hour accuracy. TACHOMETER (RPM)----Record real-time RPM value when engine is on, help adjust engine idle ; Suitable for 1P1R engine ignition model, which can be used on 4-stroke 2-cylinder and 2-stroke 1-cylinder type gas engines; RPM measurement range 0-30600RPM, accuracy 10RPM. INSTALLATION AND OPERATION --- Easy to install by connecting it to the engine spark plug, once the signal is detected, the device will work normally .