Tash's Ability Switch Tester is a great unit for testing your switches. All three types of switches - single, dual, and multiple; plug in directly and may be tested.
Item# SW4649
Suitable for:
Evaluating a number of different clients on switches: an auditory beep and light will indicate that your client has successfully activated a switch
Isolating problems: if your switch will not activate a particular device, you can find out whether it's your switch or the device that is not working!
