Mechanical timers complete timing by using mechanical structures. Compared with electronic timers, it has the following advantages:
1. Strong stability. Mechanical timers do not require power supply and are not affected by factors such as battery life, and can always maintain stable timing accuracy.
2. High reliability. The structure of mechanical timers is simple and they are not prone to failure.
3. Long service life. The service life of mechanical timers is relatively long and they do not need to be replaced frequently.
