Wireless Alarms And Security Cameras

[JohnCunningham]

I know there is going to be a simple answer for this. Security not my thing but always wanted to know....

I have a Tv sender which sends my sky programs to the tv upstairs, My laptop also wireless and the baby monitor also wireless. They all interfere with each other as they must be all at similar frequencies. With this in mind......

Do you get problems with wireless alarms and cctv in houses with many other wireless items being used.

what stops your neighbors tv sender picking up wireless cctv pictures from your house ( we used to have tv tennis sometimes with my neighbor changing my tv channel all the time) or more to the point what stops a burglar tuning in to your wireless cctv to see if anyone is at home.

Thanks

John