1.The device is damaged
The device in the mechanical timer may fail to operate due to long-term use, damage or other reasons, resulting in the timer not sounding. This requires checking and replacing the damaged devices.
2. The time setting is incorrect
The time requirements for mechanical timers are rather strict. If the set time is incorrect, the mechanical timer cannot be used normally either. Carefully check whether the time setting is correct.
3. Power issues
If the circuit where the mechanical timer is located has no electricity or the voltage is unstable, it will also cause the mechanical timer not to sound.
