Rachio compatibility with Toro Wireless Rain Sensor


Rachio is NOT affiliated or authorized by TORO; the TORO brand rain sensors are manufactured by TORO. 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 Instructions for a Toro Wireless Rain Sensor

  1. Wiring Chart
  2. Wiring Diagrams

1) Wiring Chart


Wire Color Gen 1 Rachio Gen 2 Rachio
White R1 (left-most yellow terminal) SC (Sensor Common - left of SP)
Red (a) R1 (paired w/ above) SC (paired with above)
Red (b) C (white terminal - far right) SP (Sensor Power - far right)
Brown R2 S1

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2) Wiring Diagram

Generation 1

Generation 2

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