Review on Sperry Instruments CS61200AS Adaptor Electrical by Carlos Reyes

This adapter works well with the Sperry Switch Finder (aka CS550A), but NOTE: The white wire is connected to the hot side (center pin on the screw adapter) not the neutral side. The socket on the adapter is countersunk to mount the Sperry switch transmitter. Other brands of switch transmitters will not fully insert unless a portion of the plastic lip on this adapter is cut off. The adapter has a warning "For 120V only". I think this is because the Sperry Breaker Transmitter is limited to 120V, not because this adapter's isolation is only rated for 120V.