Unverified85% confidenceCautionTime unknown
老式墙面开关无零线时不要买普通智能开关：无零线场景需选'单火线'专用智能开关，否则会出现灯泡闪烁或无法关断，或改用智能灯泡方案绕开
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85%
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Long-term
Relevance
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