Beeper Box
2 purposes:
1) "Someone asked me to create a simple Beeper Box to allow a non-verbal switch user to do Morse Code with 1-2 switches. This device does that! 1 switch for dot/dit, or 2 switches for HIGH pitch/low pitch." RJ
2) A simple switch tester.
Comes with batteries. Switch(es) not included.
My Beeper Box is the product you didn't think you need, but once you have it, something you won't want to live without.