Step 1: Required Parts and components
(1) npn 2n2222 transistor (any small signal npn transistor should work)
(1) magnetic NO (normally open) alarm switch
(1) roll of double sided tape.
shrink wrap or electrical tape
3mm drill (bigger is ok, it's just for running wires trough the cases)
24 guage wire ( approximately 2' (60 cm))
soldering iron and solder