Ok, what is this?I have figured it out it is a program timer. I assume the bells are hard-wired to it. It also has the optional transformer and selenium rectifer intalled. Optional as in the schematic shows it as a dotted line and says the dotted line is for options provided on each order. Trcing it out, it appeard the dc is feeding the program motor,a master relay, and then it goe to three terminals that would go out to accessories. It is labeled A B C . On the schematic is is labeled either 24 or 48 v dc. Is this meant to operate the correction coils on the 3 wire Ibm/simplex slaves? Because if it is I can change the correction coil on my electronically corrected slave. Or find a different clock. I'll try and post pics once I take some better ones.