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/diy/ - Do It Yourself

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>> No.2398421 [View]
File: 91 KB, 1280x720, battery operated thermostat.jpg [View same] [iqdb] [saucenao] [google]
2398421

>>2398177
>This remembers state right?

if you have an old thermostat of this type or similar, you'll find inside 2 or 3 latching relays that work at 3V dc.
i got a couple from the thrift store for a couple of bucks.

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