Rachio compatibility with Hunter Rain-Clik Wireless Rain Sensor

Wiring for the Hunter Rain Clik Wireless Rain Sensor


Rachio is NOT affiliated or authorized by HUNTER; the HUNTER brand rain sensors are manufactured by HUNTER. This article is intended for instructional and compatibility purposes only.

Rachio does not recommend the use of 3rd party sensors unless required by local code. Remember to always enable Weather Intelligence features to skip watering schedules BEFORE it rains; rain sensors will only skip watering schedules AFTER it rains.

Wiring Chart

Wire Color Rachio 3 Generation 2  Generation 1
White VAC(-) (Sensor Common) SC (Sensor Common - left of SP)  R1 (left-most terminal) 
Yellow (a) VAC(-) (Sensor Common) SC (paired with above)  R1 (paired with above) 
Yellow (b) VAC(+) (Sensor Power) SP (Sensor Power - far right)  C (white terminal - far right) 
Blue S1 S1 R2


Wiring Description/Diagram

Select your controller below for details on controller-specific wiring. 

Rachio 3 Generation 2 Generation 1

Hunter Wireless Rain Sensor for Rachio 3

Insert the Blue wire into the S1 terminal of the Rachio 3. Insert the combined Yellow wire (a) and White wire into the VAC(-) terminal. Insert the remaining Yellow wire (b) into the VAC(+) terminal.


Stuck on wiring? Check out this article on basic and advanced wiring for all Rachio controllers!

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