Contact sensor at moving door/window with two positions


i have a question about the alarm contact for door/window.

I have got Sliding
doors and windows with two open function. How i can install my contact alarm usefull?

Here a picture about it.

Thank you for help.

Greeting Mar

Hi @AnhMar. This type of window would benefit from 2 Contact Sensors. I would suggest adding on each window that slides. I don’t see a way where you can use 1 Contact Sensor to cover both doors. See the picture below for my suggested mounting solution.

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