This tester includes “Set Analyzing” functionality. I adapted a new GE NE-30 neon shorts indicator bulb. This is an equivalent neon bulb, but the base is much larger. I had to build a socket for the new bulb. Unless you look under the deck, you’d never know that the neon bulb is not original. I built a replacement 4.5 volt battery for the ohms testing using three AAA batteries. It works just fine, but ohms testing is not accurate.