Sorry – here is the quote from Stephen:
“Orbit timers are set up to work with rain sensors that operate as a normally closed circuit, and then send a rain delay signal when there is a break in the circuit. I cannot say how your current sensor operates, but it will need to be a normally closed operation to be compatible. If it is a two-wire sensor then it needs to be hooked up in series with your common wire, not to the rain sensor terminals which are used for wireless rain sensors.”
Please confirm which is correct.