Hour meter This hour meter is mechanical type.Widely applied in each kind of machine, equipment and device(such as environmental protection equipment generator etc). Used for to demonstrate the machine, the equipment, the device accumulation operating time. It is mechanical type accumulation, the longest time for accumulation time can be 11 years. It still can maintain the data after the power cut. Itemno. Bz142-1 bz142-2 bz142-3 Operating voltage ac 24-450v ac 24-450v dc 10-80v Ferquency 50hz 60hz Time range 0-99, 999.99h Dimension 48 x 48 x 40mm Net weight 50g Mounting insert type