Siam Circus SYS-1 DC 12-36V Industry Quartz Timer Hour Meter - Black (0-99999.99 Hours) This quartz electronic sealed timer has the advantages of novel structure, flexible, high precision, stable and reliable performance, long service life, widely adapted to the environment, low price, easy to use.It is most suitable for standard industrial timing, widely used in engineering machinery, engineering vehicles, agricultural machinery, generator, air compressor, water pump, crane, crane and various types of car etc. and provides scientific basis for checking cumulative actual work time charging, tracking and monitoring the maintenance cycle of sophisticated instruments and equipments.