Custom timing:
1. Press "A long light switch"
Time display
Waiting for the time
2. Wait for the timer to reach the preset time, press the "B timer switch" to turn on the countdown function
Custom timing:
1. Press "A long light switch"
Time display
Waiting for the time
2. Wait for the timer to reach the preset time, press the "B timer switch" to turn on the countdown function
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