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Comment by NegativeLatency | Hacker News Reader

Depending on your air filter you might be able to just use a smart plug, I went down a similar route this summer before realizing that mine would remember their power state and settings when powered off.

So now I just have them plugged into a few smart plugs with automations in homeassistant

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Why not just use a dumb timer plug from a hardware store?

Ten bucks, and completely hacker-proof: https://www.acehardware.com/departments/lighting-and-electri...

$16 if you need a remote control: https://www.acehardware.com/departments/lighting-and-electri...

Or $17 if you want to get all digital and fancy: https://www.acehardware.com/p/3001323

Sure those work, I've tried them before, but I find them more fiddly and less fun to program than homeassistant.

Also I can easily turn them on or off from my phone which is nice if I'm feeling lazy.

I would need a device with a physical switch rather than a touch control. Sadly many devices, mine included, have "power was cycled = device is off" logic.

You might have luck with these... https://uk.switch-bot.com/products/switchbot-bot

curiously mine are digital momentary switches, they just happen to store their state in some kind of nonvolatile storage

This is what I do with my dehumidifiers.

It's been working so well I was actually surprised one night when the dehumidifier in the bedroom turned itself on from the automation (which I have set to do after dark if humidity is higher then 70%).

It had been within tolerance for ages and I just hadn't had to even think about it.

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