The acousto-optic switch of incandescent lamp is always broken.

This is for sure, as long as filament light source is used, especially light bulbs with small power and thin filament are more likely to break down.

The reason is that the sound control is adopted, and the lamp is frequently switched on and off, and the impact damage to the filament is even worse than that of continuous lighting for two hours, especially when the lamp is started, the impact current is often greater than that of continuous lighting after lighting. Therefore, all filament loads, including TV CRT tubes, are most afraid of frequent switching shocks.

Solution:

1, the voice control switch is changed to thermoluminescence infrared induction of human body, which increases the function of automatic shutdown during the day;

2. Replace incandescent lamps with energy-saving lamps.

3. If you can only use incandescent lamps, you can change bulbs with high filament power and wattage as long as you are not afraid of wasting electricity.

If you say that the voice switch is broken, it must be that the design or material of the voice switch is unreasonable.