In all of the alarm systems fitted in banks in movies the lasers that trigger the alarms are spread out, if they want to ensure that the bank - or item - is safe, why not just make a whole wall of laser which is impenetrable???
Change the batteries. You should be changing them yearly if not twice yearly. If the detectors are approaching 10 years old, replace them all.
Most fire hydrants are marked but not always with red curbside, sometimes only a sign.~
that makes no sense, but either do these idiots running yahoo so do whatever you want to.
