Okay so the manufacturer confirmed the power inside the remote is all AC.
That means the positive (brown) wire going to the rocker switch is (roughly) 130VAC and the blue wire going to the indicator light is (roughly) 230VAC.
I've already managed to successfully hook up the wires to a relay, but I was wondering if it's possible to add some sort of indicator status detection? I could use the existing indicator light and hook up an LDR to see how bright the light is, but is there an easier way to detect a large voltage drop (230V to 10V)?