Rain Bird WR2 Wireless Sensor User Manual

This manual provides installation, setup, and operation instructions for the Rain Bird WR2 Wireless Sensor, including wiring, pairing, and programming set…


Rain Bird WR2 Wireless Sensor User Manual - cover page
Brand
RAINBIRD
Category
Other
Document type
User Manual
Language
English
Pages
36
File format
PDF
File size
3.4 MB
Published
18 October, 2026
Updated
18 October, 2026
Model
WR2
MD5 checksum
C1E601466A74D2DC261B4C7A6723B2E2

About this manual

The Rain Bird WR2 Wireless Sensor is designed for residential and commercial irrigation systems to save water by automatically sensing precipitation and interrupting irrigation during rain or low temperature events. The device features a controller interface for programming and a sensor unit with an easy-to-install battery cassette.

What's inside

  • Safety Information
  • Introduction
  • WR2 Components
  • Mounting the Controller Interface
  • Wiring the Controller Interface
  • Initial Power Up
  • Controller Interface Display Icons
  • Irrigation Modes
  • Synchronize the Sensor and Controller Interface
  • Programming the Set Points

Specifications

Battery TypeLithium CR2032
Cable Harness Length30 inches (76.2 cm)
Voltage Requirement24VAC circuits only
Rainfall Set Point Range1/8" (3mm) to 1/2" (13mm)
Temperature Set Point Options33°F (0.5°C), 37°F (3°C), or 41°F (5°C)

Frequently asked questions

How do I know when to replace the battery?

Replace the battery when only one (1) bar remains on the battery life indicator.

How do I synchronize the sensor and controller interface?

Push and hold both arrow buttons on the Controller Interface, then insert the battery cassette into the sensor when the pairing icon flashes.

What happens when the rainfall set point is satisfied?

Irrigation is suspended, and an X and the corresponding rainfall trip indicator will automatically display.

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