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The control wire of the lamp is wrong in the junction box, find an electrician to rewire.
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It should be a string. It is equivalent to the first stage of dual control and three control. Find an electrician, find the switch wire joint, re-wrap the electrician insulating tape, and you can solve it!
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Haha, there are a lot of strings now, hahaha,
Why turn on the toilet light, the bedroom light will flash >>>More
It should be that there is a problem with the line, take a pen to test it.
If it's in the same control panel with the consent loop, then there must be a problem with the contact, try to tighten it with a screwdriver.
You'll have to find the electrician you installed it in the first place.
Do you mean that when both lights are on, the bedroom lights are flashing?