Even / odd times uses of aqara window / door sensor on cat flap

Hi, is there a way to configure the following:
Uneven times uses of Aqara window door sensor = notify (or show on dashboard) cat is outside house.
Even times uses of Aqara window door sensor = notify (or show on dashboard) cat is inside house.

I’m still learning my way around in Home Assisant so your help is much appreciated. Thanks!

The simplest way I would approach it is by toggling an input boolean when the cat flap is triggered, then use that input in a binary template sensor.

In fact a quick search shows someone has already done it:

Your binary sensor template wouldn’t be “open/closed” - it would be “in/out”

My only issue is - knowing the way cat flaps work - I would probably put a delay in the automation to debounce any false signals from the cat flap swinging and triggering the sensor, after the initial one when the cat went through.

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Thank you! Will try to get this working tomorrow :blush::+1: