In Esphome - how do you tie an entity's state to another entity?

If a switch goes off or on, I’d like to mirror its state to another entity. I’m not really sure how I’d do this. Like an interlock but in reverse? To tie two states together?

I realise I can do it as an automation but is there a simpler way?

Thank you!

automation is the answer.

Found it here. A trigger of a switch is the answer. Don’t know if this is classed as an automation or not! :slight_smile:

As I said, it is an automation, :slight_smile: