Searon Digital Hour meter of 12V 24V 36V 48V 110V 220V 230V AC/DC for ATV Lawn Mower Chainsaw Compressor Tiller Chipper Marine Farm Tractor Excavator Digital hour meter (Read Existing Hours) 6V 12V 24V 36V 48V 110V 120V 220V 230V 240V AC/DC for ATV Lawn Mower Chainsaw Compressor Tiller Chipper Marine Farm Tractor Excavator Wide voltage range: AC/DC 5-277 Volt. Accumulate non-resettable total running time of engine. Record 2 resettable JOB time: TMR1 &TMR2 Panel Cutout Size: Approx. 37.5 * 24.5 MM / 1.5 * 1 Inch. Can Set Existing Hours On This Hour Meter & 2 Years Warranty.