may be connection loosed.

来源: famer 于 2023-04-08 07:03:19 [] [旧帖] [给我悄悄话] 阅读数 : (107 bytes)
回答: 请教电工专家安装smart switch出的问题 由 Wei_PDX 于 2023-04-07 22:13:09

Two possible: 1, The connection loose. 2. The switch that you replaced may a two way switch. 

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