Dow Key Relay Wiring a Dow Key relay is a simple task providing you have a solid working knowledge of your radio frequency (RF) system. There are a large variety of Dow Key relays and switches available. Some Dow Key relays install directly into your computer like any other kind of plug-and-play card, some are designed to be hardwired into your RF system. You should be able to connect most types of wired Dow Key relays in about twenty minutes.

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