How to invert entity state?

Configuration
1

HI

I have use NO relay for my main water valve. So if the main power is off my house, I can still get water.

But my mushroom card entity state show “main water valve off”. How can I change that?

2

Which integration did you use to connect the relay to home assistant?

3

As Tom stated, normally your integration should be able to handle this. So please check there first! :slight_smile:

Nonetheless, there is an integration, that could help you with that:

4

N.O. = Normally Open. If there is no power to energize the relay, then the N.O. contacts won’t close. I.E., no power=no water.

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5

I just assumed there was some reason they couldn’t use the NC contact. In hindsight that was pretty dumb.

6

I use Kincony KC868-A8 board. ESP32.
My water valve has 2 inputs.
1 input = Open valve
2 input = Close valve

I use Kincony board relay. Relay has NO/NC output.

Main thing is, if power goes off for kincony board or something else happen. I can get water

8

Interesting, there must be some difference in the naming of these things around the world… :laughing:

In Germany it’s quite the opposite: if a valve is NO, it let’s fluid through, with no power. NC is closed without power.

9

In the US, a valve is not a relay.

Rereading your post, I gather that you are using a normally-open valve. I first read that you had a relay controlling a valve.

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10

Thanks Steve! :slight_smile:

I didn’t noticed we’re talking about a relay, I just assumed water = valve :joy: So things aren’t that different on the other side of the pond. :laughing:

11

I’m old enough to remember when a triode was a valve depending on which side of the pond you live.

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12

:rofl: Me too! :rofl: