Node-red change input boolen

I have one boolean entity–> input_boolean.bedroom_ac_xfan

How can I find this entity in node red, so i can set that this boolean turn on and off itself at certien time

What do you mean how can you find it?

When you’re using home assistant websocket nodes it’s just an entity in the drop-down boxes in a node. Event state, call service, etc

Here is input boolen in lovrance ui.
image

Here you can see that input_boolean does not come up

but can find other items
image

Domain is input_boolean