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The circuit light will only turn on, according to how to speculate, there should be a problem with the switch, maybe it has been touched. Let's take a look at an electrician.
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There is a problem with the switch and the contact is poor.
First of all, see if the switch of the distribution box has tripped. >>>More
Voice-activated switches, or sensor switches.
You're thinking too much.
It must be a problem with the circuit, don't scare yourself, right? >>>More
I know what you're talking about, which is that when the lights are turned off at night, it automatically emits light, but it's not obvious, it's very dark to be visible. >>>More
The old-fashioned inductive ballast, when working, will make a hmm-huh sound, which can separate the ballast from the lamp body by cardboard, which can reduce the resonance formed with the lamp body when the ballast is working.