Here is a pic of the insides of the Woods photocontrol I got on ebay. The board is kind of similar to the ones Precision uses for their electronic photocontrols.
Yeah it is definitely an interesting circuit board. Notice how small the MOV is. This is probably what the insides of an electronic Touch And Glow PC would look like if T&G had an electronic PC since the outside of these looks like a T&G photocontrol. The same company probably makes these that makes the Touch And Glows. It's probably Longjoin.