this post was submitted on 08 Nov 2025
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Looking for a zigbee power meter plug without a switch (lemmy.ml)
submitted 2 weeks ago by SomeDudeFromSpace@lemmy.ml to c/homeassistant@lemmy.world
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As the title says, I'm looking for a plug that can measure power consumption, but does not even have a relay to power it on or off. I want it always to be on. The reason is that I'm tired of my smart plugs randomly turning off for no reason, even after I've updated them to the latest firmware version. Heck, I even have an automation in Home Assistant that turns them on again when it happens. I don't even know if what I'm looking for does even exist. I've been looking around and haven't found anything like it. If any of you fine folks know, please shout!

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[–] limelight79@lemmy.world 10 points 2 weeks ago (1 children)

I have a bunch of S31 plugs from Sonoff, flashed with Tasmota.

In Tasmota, you can set it to default to on and ignore the button. In fact I'm not sure if I can even turn it off via the HA interface without changing an option in Tasmota.

I have this set for several plugs - fridge, freezer, pellet stove, sump pump, etc. No issues with any of them, and some are a few years old. I think I even have the switch on the washer's plug disabled, too.

[–] SomeDudeFromSpace@lemmy.ml 2 points 2 weeks ago (1 children)

This is a good one. Does Tasmota support Zigbee too? Thanks!

[–] limelight79@lemmy.world 3 points 2 weeks ago

I have to admit, I forgot about the Zigbee part when I replied.

The S31 Lite, which uses Zigbee, is supported by Tasmota. However they have a max current draw of 5 amps and don't do power monitoring like the regular Wifi S31. I haven't used the S31 Lite, so I can't speak to how the pairing works or other details.