> Anyone know what that switch that hangs over the door & trips when > the door opens is called? It trips a small gong to let folks in > the office know someone just walked in...
Door Annunciator, but you can go to Rat Shack or equivalent and get a door contact (you pick n.o. or n.c.) for an alarm system. > > I can picture it; an arm, pendulem, contact.... but can't think > of a good Google noun. > > I have a plan B in mind; a standard recessed contact, a gonger > that goes off once when it opens, and a PIR inside so that when > someone leaves, it's silent, but that will take some design. _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
