HM-2 Square Hour Meter/ Timer Voltage: AC110V, AC220V 50/60HZ Time range:0-99999. ... , air compressor, water pump, hoist, crane , Various types of automobile , and etc. the features are new construction ,high precision, long life ... , stable performance ,widely use, and easy operation. Technical Specification ModelHM-2Operating VoltageAC110V, AC220V 50/60HZTime ...