... ,24V;AC 110V,220V,380V 1.Feature: HM-1 Hour Meter, Counter 1.Count range:0~99.99999 hours 2.Voltage ... :HM-1 This hour meter is mechanical type.Widely applied in each Kind of machine, equipment and device(such as environmental protection ... etc). Used for to demonstrate the machine, the equipment, the device accumulation operating time. It is mechanical type accumulation, the longest ...