SD-711 quartz-enclosed electronic hour meter, Electromotor hour meter, timer innovative structure, size, high accuracy, Reliable performance, long life and adapt to the environment - and lowprices, 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 sophisticated equipment maintenance cycles to provide scientific basis.

Technical parameters
1. Time range 99999.9
2. Accuracy: ± 0.01%
3. Operating temperature: -10C--+50C
4. Powder 0.3W
5. Relative Humidity All sealed Returntozero no
6. Power voltage 6----80V, 90---130V, 180---240V (The DC generic)
7. Completely sealed, dustproof and dampproof
8. Mechanical vibration: Work well under vibration of 10-70Hz 1-8g