I have a hard wired, simple, Radio Shack alarm system. It uses small
spring-button switches that go into the frame of a door jamb. You drill a
hole about 3/4 of an inch or so, and install the switch in the hole.

Radio Shack no longer makes alarm systems, and thus they don't sell the
switches. Can anyone recommend a place to buy them please ?

Thanks for any advice on this.

James