The cops have a system where the cop, is called on his personal body reciever. All they do is press the button to send a signal back to the station they are ok.
Now the x-10 camerss send at 2.4 g hz , here how it works.
The police body reciever when it send the signal back it causes interferance to the camers. The screen has a bunch of static on it, because the cops are close, when they tranmitt. I used a normal tv with , tv, 2 input visual and sound. (most new tv have this feature)
Now heres how you can tell they are close the screen has lots and lots of static.
I had narks living right next to a large grow room. YOU NEVER put a 2.4 gh camera in a room , you hard wire a camera.
The program relayrunner has a way to kill the program, with either a signal from a switch or when you take your computer and hit a sign on the screen. I have a switch between computers so the grow system is never on the screen. Except when I'm programing it or looking at data from Dataq .