Brief Description: HM-1 series quartz electronic hermetic timer has novel structure, dexterity, high precision, stable and reliable performance, long service life, wide adaptability to the environment and low price, making it convenient to use. It is most suitable for standard industrial timing, widely used in engineering machinery, engineering vehicles, agricultural machinery, generators, air compressors, pumps, driving, cranes, various types of steam 2 years, etc. Accumulated actual working time charges and tracking monitoring precision Provide scientific basis for the assessment and maintenance cycle of instruments and equipment.