I’m thinking about setting up an alarm system. Basically when the alarm is armed, I want to trigger an alert when any of a list of configured devices changes its state. The devices will mostly be lights and door/window sensors but maybe other interactable devices as well. The idea is that when nobody is home, nobody should interact with these devices.
Now my question is: is there an easy way to group all the devices in a single list and get an event when any of them changes state?
From what I read about groups, they will either AND or OR their states together and act like a single device. But that’s not what I need here.
How would you set this up? I’m probably not the first one who wants to implement something like this?
But I don’t care about on or off. I care about state changes. Simplest example: when I left on a light when I left home, I want an alert when someone switches it off.
My group may contain all kinds of devices in different states, some on, some off. For example, I may have presence sensors for some of my electronic devices. Their default is on, but when someone disconnects them from the network → alarm. Lights on the other hand should probably be off normally.
Well I guess you get my point. I don’t care about the actual state, only about unexpected state changes.