single flush type switch 单连暗开关
Flush-mounted single-pole toggle switch 暗装单极板钮开关
Flush-type Rocker Single-pole Switch 暗装跷板式单极开关
Flush-type Tumbler Single-pole Switch 暗装倒扳式单极开关
Single-phase Flush-type Flat-and-round Two-pole Socket-outlet 单相两极双用暗装插座
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