Features: 1.TOT Recording: Help track how many hours the engine has been working. When the engine is turned off, the display shows the total running time of the engine and remains visible. And the TOT hours are not resettable. 2.JOB Timer: Used to measure the time spent on specific work, such as oil changes. To manipulate the relevant buttons, you can easily view the JOB timer. The JOB timer is resettable. 3.Tachometer Function: Displays real time RPM values and maximum RPM recall. Records the real time RPM value at engine is on. Various engine ignition modes can be programmed to make the RPM more accurate. 4.Application: Suitable for all types of gasoline engines. Applicable for outdoor power equipment, generators, agriculture, construction, machinery, vehicles, boats. 5.Installation: Easy to install, with included positive and negatibe cable, and you can following the user manual to plug and play. Specification: Item Type: Engine Hour Meter Tachometer_x000D_ Material: ABS_x000D_ Battery: 1 button cell CR2032 3V 210mAH (built in battery)_x000D_ _x000D_ Total Hours Reading: From 0 to 99999.9 hours, timing accuracy: 0.1H/1H_x000D_ _x000D_ JOB Timer Reading: From 0 to 99999.9 hours_x000D_ _x000D_ Tachometer Reading: From 0-20000RPM with 10 RPM resolution_x000D_ _x000D_ Product Dimension: Approx. 60mm x 50mm/2.36 x 1.97in_x000D_ LCD Dual Screen Size: Approx. 30 x 23.5mm/1.18 x 0.93in_x000D_ Wire Length: Approx. 1.1m/43.30in (UL1107 AWM 22AWG)_x000D_ Certification: CE RoHS_x000D_ Waterproof Rate: IP65_x000D_ _x000D_ Suitable Gasoline Engines: 2 Stroke 1 cylinder, 2 stroke 2 cylinder, 2 stroke 3 cylinder, 4 stroke 1 cylinder, 4 stroke 2 cylinder, 4 stroke 4 cylinder, 4 stroke 6 cylinder_x000D_ Applications:_x000D_ Suitable for outdoor power equipment, generators, agriculture, construction, machinery, vehicles, boats._x000D_ Fits for lawn mower garden tractor riding mower leaf blower pressure washer chainsaw snowblower brush mower line trimmer string trimmer pressure washer portable inverter generator motorcycle dirtbike atv utv scooter paramotor dual sport bike outboard jetski pontoon boat raceboat hovercraft Note: 1. Please use the product in strict accordance with the user manual._x000D_ 2. Do not attempt to disassemble the host and its accessories._x000D_ 3. This instrument adopts waterproof design. It can be used in the rain, but not in the sun or rain for a long time, nor can it be used underwater, otherwise it will cause incorrect display or other problems._x000D_ 4. The measurement error is small, within the normal range._x000D_ 5. Severe vibration and strong impact may make the product ineffective._x000D_ 6. Due to the short service life of the built in battery, please try to use an external power supply when using the instrument, and the external power supply voltage is DC 6?48V or AC 12?48V.