Rachio 3 Compatibility and Tech Specs

What's new with Rachio 3? 

Rachio 3 offers many great improvements over our previous controllers:

  • Supports dual band Wi-Fi (2.4 GHz & 5 GHz)
  • Easy-press connectors are easier to install than ever and support 14-22 gauge wires
  • Rachio 3 Smart Sprinkler Controller

What's in the Rachio 3 box? 

  • Rachio 3 Smart Sprinkler Controller
    • Weight: 1.05 lbs
    • Dimensions: 9.1" x 5.5" x 1.4" 
  • Power Supply with 6-ft Cord
  • Mounting Hardware 
    • 4 screws (1-3/4" in length)
    • 4 drywall mounts (1/4" diameter)
  • Quick Start Guide

App Compatibility

  • The Rachio mobile app is available on iOS 10.3+ and Android 4.4+. Web app is available on most internet browsers.
  • Mobile app is required to connect the controller to Wi-Fi.

Wi-Fi Connection

  • Requires 2.4 or 5 GHz wireless network signal available at the installation location

Power Requirements

The Rachio controller must be connected to the AC power adapter included. DC Transformers are not supported.

  • Power Supply: External Transformer
  • (6-ft cord - 2.1mm x 5.5mm Female barrel plug)
  • Transformer input: 120 VAC ~60Hz 300mA
  • Transformer output: 24 VAC 1000mA

Zone output (24 VAC): Compatible with 24VAC Solenoids

Wire Compatibility 

Rachio 3 supports 14-22 gauge wires.

Wind Skip Rachio feature

Hardware Compatibility

Rachio 3 is compatible with:

  • Rachio Wireless Flow Meter
  • Master valve / pump relay
  • 3rd Party Sensors 
    • Rain Sensor: Wired & Wireless Normally Closed (NC) sensors
    • Soil Sensor: Wired & Wireless Normally Closed (NC) sensors


  • Rachio 3 works with Amazon Alexa, Apple HomeKit, Google Assistant, and others.

Zones/Model Numbers

  • 8-zone (Model: 8ZULW-C)
  • 16-zone models (Model:16ZULW-C)


  • 2-year limited warranty.

Optional Outdoor Enclosure 

Outdoor installations require an outdoor enclosure to protect your controller. 

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