Amazon.com : Rachio 3 Smart Sprinkler Controller, 16 Zone 3rd Generation, Alexa and Apple HomeKit & Chamberlain Smart Garage Control - Wireless Garage Hub and Sensor with WiFi & Bluetooth, White :
How do I install a rain sensor? - Rachio Support
Review: Rachio Gets Even Better with its Gen 3 Smart Sprinkler Controller - HighTechDad™