220V relay board, power on, time delay, circuit module, corridor switch, stair light, D1B5
![220V relay board, power on, time delay, circuit module, corridor switch, stair light, D1B5](http://ae01.alicdn.com/kf/H665b701efd3b42a6a27c011880faf8a95/220V-relay-board-power-on-time-delay-circuit-module-corridor-switch-stair-light-D1B5.jpg_350x350.jpg)
sku: 4001198341928
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$2.90
Shipping from: China
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