Toggle HA switch via Logitech Harmony

I’ve got a Logitech Harmony Remote and MQTT enabled lights (switches set up in HA). I’d like to be able to turn off the lounge light when I use the “home cinema” command on my Harmony remote.

I’m sure it’s possible to do, but I don’t know where to start. It appears that the Harmony remote can’t interface with MQTT directly, so I’d need to use HA as the middleman - but having read the documentation, I’m still not sure on where to start.

Can anyone point me in the right direction please?

Use emulated_hue. Harmony will pick them up and then you can have it be part of your home automation actions when you hit the home cinema button. That’s what I do, but I tie it to a scene rather than a single light (turn off all lights visible from living room and then dim the one in the back).

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Yep, what @superm1 said, I use them as part of activities as well as with the light buttons on my 950, works flawlessly.

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Thank to you both for the advice, I’ll check this out now and get it added :).