Wireless connection problem in security system

[Saeedk9574]

Hi every one
I want to learn about security systems and make one of them as high quality as the industrial ones.
Here, my question is how to connecte motion detector sensor (PIR) to the control panel. What I mean is which component I need to provide.
Unfortunately, I could not find any schematic on the Internet for the wireless connection of PIR.

 

[Saeedk9574]

In security systems, How motion detectors (with PIR) are connected to the control panel wirelessly? Which components are required to do this. I am going to share some pictures of motion detectors board that that I have found on the Internet. Can somebody realizes the component that is used for wireless connection?