ultramegabob
Senior Member
- Location
- Indiana
I have a customer that owns a restaurant that wants me to install a loud chime or buzzer that comes on anytime the back door is opened but has to have a key or some other way to shut if off (this is to assure that a manager comes to look and see what is going out the back door). I am sure that I can build something to work with a set of magnetic contacts a relay and a keyed switch, but I was wondering if there is a complete unit already made up for this, any input is appreciated...