Quoted from zacaj:
From the schematics I think the relays in pharaoh run off 24V, not 12V. Unless the resistor is lowering it to 12...
24V going to relay circuit.
There is a 100 ohm series resistor to this coil. A 12V coil itself is 103 ohms. So, yes - this resistor is used as a voltage divider and this would be a 12V relay.
The Omron relay in post # 3 is the correct part. Only difference is this one has a plastic shroud which is just a cosmetic difference.