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NORMALLY-CLOSED RELAY: initially relay is in "closed" position and your device circuit is connected. when power is applied to the switch and the remote button is depressed, relay will then opens up and circuit will be disconnected.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.