

The listing, Alarm System has ended.
Driveway Alert System, can use this where ever you want , the smaller item is the one you place outside and the larger item you leave indoors as this is the one that will sound off, the smaller item takes 1 nine volt battery ( not included) and the larger one takes 3 C batteries (not included) or you can use the adapter that comes with it, but you still have to use one nine volt even with the adapter plugged in, the smaller item which you place outdoors is discolored from the sun.