Rachio 3 Rain Sensor


I just got my kit and plan on setting it up tonight. One quick question about my sensor. In the picture, I have a red wire going to one terminal and a black wire going to another terminal. Should one wire go to S1 and the other to S2? I only have 1 switch so just wasn’t sure.

Thank you.


Usually the output of the rain sensor would be connected S1 and 24V- terminals, like this (link):

Does your sensor only have 2 wires, or is it of the wireless variety?



I have 2 wires. It is a Hunter system.


In that case, no need to worry about powering the sensor, just hook up the wires to S1 and 24- terminals as shown :+1:



Ok thank you for the help!