Professional Round Hour Meter AC/DC 12V-36V Engine Meter Tester for Boat Auto ATV UTV Snowmobile Tractors Generator -- Product Specifications OOTDTI Condition: 100% Brand New Color: Black Material: Plastic and Metal Voltage: DC 12V-36V Power: 0.3W Use Temperature: -10 deg; -50 deg; Size: approx. 7.5*6*3.2cm Item included: 1 x hour counter Suitable for: tracking time on machines such as boats, cars, trucks, tractors or other devices where time is used to determine replacement intervals oil, service requirements or when you need to record operating hours Note: Item without auto-to-zero function Product Description Feature: 1) The meter has positive and negative leads for easy installation. 2) The timer has a 6 digit display with the least significant digit 1/ 10 hours (99999.9) and operates on input voltages ranging from 12-36 DC.3) The hour counter timing mechanism contains a crystal oscillator which ensures a high degree of accuracy.