Features 1、[Mechanical Timing] With the internal mechanical instrument gear, this mechanical hour meter provides real time tracking of the total working time of your equipment for accurate monitoring. 2、[Wide Working Range] The industrial hour meter performs within a wide range of 0 to 9999.9H, with a precise of 0.01H, providing reliable readings, no reset option. 3、[Auto Data Retention] When the equipment stops working, the mechanical hour gauge automatically retains the original data. The next timing cycle starts from the accumulated value, ensuring continuity. 4、[Wide Voltage Range] Operating within a wide voltage range of 12 to 36VDC, this mechanical hourmeter is versatile and compatible with a variety of industrial machinery and vehicles. 5、[Versatile Applications] This quartz hour meter is suitable for industrial production, generators, engineering vehicles, environmental equipment, battery cars and more. Specification Item Type: Mechanical Hour Meter Material: Quartz Overall Size: Approx. 65x55x32mm / 2.56x2.17x1.26in Working Voltage: 12-36VDC Timing Range: 0 to 9999.9 hours Installation Method: Product fixed on the panel with screws Package List 1 x Mechanical Hour Meter 1 x Mounting Clip