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Front view of Irritrol RD900-INT-R RainDial 9‑station indoor irrigation controller showing dial, program labels, and wiring terminal for sensor hookup.

Irritrol RD900-INT-R RainDial 9-Station Indoor Controller

Brand: Irritrol
Save 27%
$516.09
$374.17
SKU RD900-INT

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The Irritrol RD900-INT-R RainDial is a dependable, programmable 9-station indoor irrigation controller built for residential and light-commercial landscapes. Designed for straightforward setup and long-term reliability, the RainDial-R adds smart water-management options when paired with optional Climate Logic or SMRT Logic accessories.

  • Climate Logic compatible: Automatically adjusts watering based on wireless weather sensing to reduce overwatering and conserve water.
  • Three independent programs: Run up to three programs with three start times per program (9 starts total) and choose program stack or no-overlap operation.
  • Rain sensor ready: Built-in sensor bypass switch and terminal simplify connection of wired or wireless rain/freeze sensors.
  • Remote and gateway ready: Compatible with CRR remote series and SMRT Logic gateway for remote control and monitoring.
  • Flexible station control: 9 stations with station run times from 1–59 minutes (or up to 5.9 hours in 0.1-hour increments) and assignable master valve/pump start circuit.
  • Reliable power and memory: 24 VAC transformer output with 1.25 A transformer available; non-volatile memory preserves programs and a 9V battery backup supports programming setup.
  • Time-saving programming: Water budgeting, program-specific clear/erase, and a quick-test routine speed installation and ongoing adjustments.

Backed by Irritrol’s long-standing RainDial series design, the RD900-INT-R offers a balance of simple, familiar controls and modern expandability for weather-based scheduling and remote access. Ideal for contractors and homeowners who want a durable indoor controller with smart-system upgrade paths.

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Frequently Asked Questions

What voltage transformer does this controller require?
The RD900-INT-R uses a 24 VAC transformer (1.25 A output commonly supplied). Use the specified transformer for reliable operation.
Is the RainDial compatible with weather-based controllers?
Yes. It is compatible with the optional Climate Logic wireless weather system and SMRT Logic gateway for automatic schedule adjustments.
Can I control overlapping station runs?
Yes. The unit allows program stack (overlap) or can restrict operations to prevent overlapping station runs.
Does it support remote control devices?
Yes. The RD900-INT-R is compatible with the CRR remote series and can be paired with SMRT Logic for remote access.
Will programs and time settings be retained during a power outage?
Yes. Non-volatile memory preserves program data; a 9V battery backup helps retain time and programming during power interruptions.