What is the test procedure for Milty Zerostat?

Answer 1

You can test the zerostat by using a battery operated voltage detector (the pen type) that can be purchased at most home improvement stores

Simply hold the zerostat tip on the tip of the detector and press both triggers simultaneously when it beeps or chirps will indicate that the Zerostat is functioning properly, or you can just shock your fingertip if your into it!