.... Anyone got or looked at wireless alarms?

I'm currently looking to install an alarm, and wireless would be Oh so
much easier to plumb in, obviously.

I'm worried about battery life / interferance / false alarms and
stuff...

The Response SA5 looks like a nice unit, but it's only got 256 unique
'house codes' (as do many wireless alarms). You _can_ sit outside
someone's house and simply try them all until you find the one that
disarms the system... which kind of seems a bit weak on the security
front.


Anyone got any comments or experience?