Re: Is it possible to alarm a pool cage???

["Bill" <billnomailnospamx@xxxxxxxxx>]

"victor"  wrote in message
> Is there any kind of sensor device that can be incorporated into a
> home alarm system to secure a screened pool cage??

You can have all sorts of outdoor sensors. A magnetic contact for if a gate
is opened. A light beam that if it is broken, it trips the alarm. A "trip
wire" that if someone walks into it, an electrically conductive tab pulls
out of a pressure device which then loses electrical contact and trips the
alarm (or if wire is cut).

Then the military and prisons have all sorts of sensors including ground
pressure sensors and motion sensors and wires running in fences (trip if cut
or capacitance trip if touched), however these are prone to false alarms,
but in these cases there are 24 hour armed guards who are patrolling the
fence anyway, so not a big deal. Or they might have cameras and if an alarm
triggers at a remote location, they can look via the cameras to see if it
was the wind blowing a box into a fence or an intruder.