Rachio compatibility with Orbit Wireless Rain Sensor

Wiring Instructions for the Orbit Wireless Rain Sensor


Rachio is NOT affiliated or authorized by ORBIT; the ORBIT brand rain sensors are manufactured by ORBIT. 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 Gen 1 Rachio Gen 2 Rachio Rachio 3
White R1 (left-most yellow terminal) SC (Sensor Common - left of SP)  24 VAC- (Sensor Common) 
Red (a) R1 (paired w/ above) SC (paired with above)  24 VAC- (paired with above in Sensor Common)
Red (b) C (white terminal - far right) SP (Sensor Power - far right)  24 VAC+ (Sensor Power)
Yellow R2 S1  S1


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Wiring Diagrams

Rachio 3 Generation 2Generation 1

Rachio 3

Rachio 3 Orbit Rain Sensor Wiring

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