I am trying to use an Omron relay G2R-1-AC120. I have four possible siganl wires that can be usedas the input to the coil of the relay. There appears to be two pairs of wires. Two of the wires when I measure with a scope show a sine wave with a peak voltage of around 240. The other two wires show a sine wave two that is really noisy and very small. I am using a series resistor in front of the input side of the coil (to create a voltage divider) to reduce the voltage to around 120rms to work with this relay. I tried using the 240VAC signal to the input side of the coil, and the small signal on the output side of the coil, but the switch never closed. When I measure the voltage after the resistor which should be what the coil sees I see about 175VAC on the scope, and about 116rms with a DVM. Seems like this should work im not sure why its not. Am I using the wrong combination of wires?? Also I tried using a variable 50K resistor, and I swept from 0 to 50K and still couldn't get the swith to close. Not sure if the frequency matters.....there is no spec for frequency for the relay. Anyone have any help/ideas that would be great thanks!!