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Honeywell R8222D1014 24V General Purpose Relay

When HN users recommended it

1 HN user recommended this in 2014, in one comment.

20072026

Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.

What HN users said

stephenjudkins linked amazon.com View on HN
in Building an open source Nest, 2 replies deep

It's pretty simple to wire up a 24VAC thermostat to control 120V power. Purchase a transformer [http://www.amazon.com/Honeywell-AT140A1000-40Va-120V-Transfo...] and a 24VAC relay [http://www.amazon.com/dp/B00097BDUA/ref=pe_385040_30332190_T...], get a junction box, and wire it all together.

This doesn't solve your problem of the $250/room cost, but if you'd like to use some other thermostats in your rooms this would work great.

The only complaint I'd have about mine is that the relay is very loud. You might want to search for a quieter one.

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