Shinelan Rain Sensor Hygroscopic Discs pack—sixteen discs for Rain Bird compatibility and moisture-triggered readings.
Shinelan Rain Sensor hygroscopic disc closeup showing material that responds to moisture for sensor triggering.
Shinelan hygroscopic discs demonstrating WR2 compatibility for wireless Rain Bird sensors.
Shinelan installation view showing replacement discs in a Rain Bird sensor housing.
Shinelan irrigation setup using hygroscopic discs to trigger watering events.

Shinelan

Shinelan Rain Sensor Hygroscopic Discs - 16-Pack for Rain Bird RSD/WR2

High-performance patio lawn and garden made for confident daily results

$15.32

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Why customers choose PatioZora Garden

Shinelan Hygroscopic Discs for Rain Bird RSD and WR2 Wireless — 16-Pack

Upgrade your Rain Bird irrigation setup with Shinelan hygroscopic discs. These modules trigger the switch through moisture-driven expansion and contraction, offering a practical replacement solution when components wear or drift out of calibration. The discs are designed to be compact, sturdy, and easy to handle, making routine maintenance simpler and less disruptive to your watering schedule.

How they work

The discs sit inside compatible Rain Bird sensor housings and respond to ambient moisture. When humidity changes, they swell or retract slightly, moving the switch and signaling the controller to start or stop watering. The design relies on moisture-driven physical change rather than electronics, which can help with predictable performance across seasons.

  • Moisture-driven triggering to cycle irrigation based on weather cues
  • Replacement discs for Rain Bird RSD and WR2 wireless families
  • Compact form factor that fits standard Rain Bird sensor housings

Compatibility and package

  • Rain Bird RSD sensors
  • WR2 wireless family (including WR2-48, WR2-RFC, and WR2-RFC-868)
  • 16-disc pack for long-term maintenance

Real-world use cases

In a sunlit lawn, these discs can help the system react to shifting weather by providing consistent trigger points when moisture levels rise or fall. In garden beds, replacement discs keep sensor readings aligned with seasonal soil moisture changes. Homeowners may find the discs convenient for sporadic sensor relays or when upgrading older hardware.

Benefits you may notice

  • Improved compatibility with multiple Rain Bird WR2 variants
  • More predictable sensor behavior after replacement
  • Reduced downtime during part replacement and maintenance

What’s in the box and installation notes

  • Set of 16 hygroscopic discs
  • Basic guidance for installation with compatible Rain Bird sensors

Note: This is a compatible replacement part and does not guarantee specific irrigation outcomes. Use as part of routine maintenance to support your Rain Bird system's performance.

FAQ

Q: What is included in the Shinelan Rain Sensor Hygroscopic Discs set?

A: A 16-disc replacement pack designed for Rain Bird RSD and WR2 wireless sensors.

Q: Are these discs compatible with all WR2 wireless Rain Bird sensors?

A: They support RSD, WR2, WR2-48, WR2-RFC, and WR2-RFC-868 wireless variants.

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