SH, series of quartz-enclosed electronic hour meter,timer, innovative structure, size, high accuracy, reliable performance, long life and adapt to the environment - and low prices, user-friendly. It is most appropriate for Standard Industrial timing, is widely used in engineering machinery, construction vehicles, farm machinery, generators, kilns, pumps, traffic, cranes, cars and other types of fees and the actualworking hours of tracking and monitoring the performance of sophisticatedequipment maintenance cycles to provide scientific basis. Technical parameters:Timing range 9999.59 99999.9Accumulated timing precision ±0.01 environmental temperature -10oC----+50oC Powder 0.3 WIn Zhen range 10-70HZ 1-8g Relative Humidity All sealedReset mode NoPower voltage 6---80V 90---130V 180---240V (The DC generic)