RF 433 Interference

Hi,

I'm trying to do 433 RF door and window sensors. With PT2262 and 72 or direct with arduino. When I connect sensors more than one window;

if 2 windows are opened at the same time or (1 door 1 window), the signals are mixed. defining different addresses does not change that.
How should I follow a path. it was unreasonable for me to send the continuous signal because the sensors would work with the battery. when two windows are opened at the same time and send more than one signal, all devices will send same more than one signal and this will not be a solution.

How do the sensors of these smart home systems work?
Any ideas?

Thank you.

Send short messages at randomly chosen times, and the chances are that messages from different sensors won't overlap at some point.

jremington:
Send short messages at randomly chosen times, and the chances are that messages from different sensors won't overlap at some point.

Thanks for your answer.

i will try.