The Irritrol RD900-INT-R Rain Dial-R is a nine-station indoor irrigation controller for residential and light-commercial systems installed in a dry, protected location. It provides more zone capacity than the six-station model while retaining familiar Rain Dial programming, flexible schedules, and compatibility with optional Irritrol weather, remote-control, and connected-management accessories. This model is intended for indoor mounting and should not be exposed directly to weather.
Three independent programs can separate turf, shrubs, drip irrigation, or other landscape groups. Each program supports three daily start times for up to nine total starts. Station run time can be programmed from 1 to 59 minutes in one-minute increments or from 1.0 to 5.9 hours in six-minute increments. Water budgeting, monthly percentage presets, odd/even scheduling, skip-day intervals, excluded days, station delay, test-all-stations operation, and assignable pump/master-valve control provide flexibility for mixed landscapes.
The controller is RainSensor-ready and works with optional Climate Logic weather sensing, SMRT Logic remote access, and CRR handheld remotes. These accessories are sold separately. A 9-volt alkaline battery, also not included, supports armchair programming and maintains time and date during power interruptions.
Key Features
Nine fixed irrigation stations
Indoor controller enclosure
Three independent programs
Three start times per program
Run times from 1 minute to 5.9 hours
Weekly, odd/even, and interval watering schedules
Water budgeting with monthly percentage presets
Delay between stations for well recovery
Rain-sensor input with bypass
Assignable pump/master-valve circuit
Compatible with Climate Logic, SMRT Logic, and CRR accessories
Common Uses
Homes and small commercial sites with up to nine zones
Garage, utility-room, or equipment-room installations
Mixed turf, shrub, and drip irrigation systems
Indoor replacement of a compatible nine-station Rain Dial controller
Compatibility and Installation Notes
This is the nine-station indoor model. Install in a dry, protected location and use compatible 24 VAC irrigation valve solenoids. Follow Irritrol instructions for wiring, grounding, sensors, and pump relays. Climate Logic, SMRT Logic, CRR remotes, rain sensors, and the 9-volt battery are sold separately.
Frequently Asked Questions
Is RD900-INT-R the indoor model?
Yes. The INT designation identifies the protected indoor enclosure.
Can it be expanded beyond nine stations?
No. Choose RD1200-INT-R when twelve station outputs are required.
Does it include Wi-Fi?
No. Optional SMRT Logic equipment is needed for connected remote control.
Why Buy the RD900-INT-R from Big Frog Supply?
This page corrects the old outdoor wording and clearly identifies the nine-station indoor controller. Big Frog Supply also carries compatible Irritrol rain sensors, remote accessories, valves, solenoids, and repair components.
Product Videos
Product Type Indoor irrigation controller
Manufacturer Part Number RD900-INT-R
Station Count 9 fixed stations
Programs 3
Start Times 3 per program; 9 total
Station Run Times 1-59 minutes or 1.0-5.9 hours
Watering Schedules Days of week; odd/even; 1-31 day interval
Maximum Output per Station 24 VAC; 0.5 A
Maximum Output to Valves 24 VAC; 1.0 A including master valve/pump circuit
Transformer Input 120 VAC; 60 Hz
Transformer Output 24 VAC; 1.25 A
Battery 9V alkaline; not included
Sensor Input Included with bypass
Optional Connectivity Climate Logic; SMRT Logic; CRR remote
Height 7-3/4 in.
Width 10-3/4 in.
Depth 4 in.
Enclosure Indoor protected-location model
