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New ! old stock boxes may be torn or dirty but never used New items inside.The Rain Bird TRU4I (often listed as TRU41) is a 4-station residential indoor sprinkler controller. It features a dial-and-display interface, basic multi-program scheduling, and support for add-on Wi-Fi connectivity.
Key Specifications
| Feature | Details |
|---|---|
| Capacity | 4 zones / stations |
| Mounting | Indoor only (garage, shed, or interior wall) |
| Programs | 3 independent programs (A, B, C) |
| Start Times | Up to 4 start times per program (12 total daily start times) |
| Run Times | 1 minute to 6 hours per station |
| Schedules | Custom days of the week, Odd/Even calendar days, or Cyclic (every 1 to 30 days) |
| Power Input | 120 VAC (external plug-in transformer supplied) |
| Valve Compatibility | Standard 24 VAC solenoid valves |
| Memory | Non-volatile memory (keeps settings during power loss; internal lithium battery maintains clock) |
Notable Features & Wiring
* Wi-Fi Upgradeable: Compatible with the Rain Bird LNK2 WiFi Module (sold separately). Plugging the module into the internal port enables remote control and seasonal weather adjustments via the Rain Bird mobile app.
* Auxiliary Terminals:
* SENS (Sensor): Terminals for a standard normally-closed rain or freeze sensor (ships with a pre-installed jumper wire that must remain in place if no sensor is used).
* MV/P (Master Valve / Pump): Dedicated terminal to activate a master valve or pump start relay concurrently with any active zone.
* C (Common): Common ground return for valve solenoids.
* Water Management Tools:
* Seasonal Adjust: Scales watering run times from 5% to 200% globally or by program without re-entering durations.
* Rain Delay: Allows pausing scheduled watering for up to 14 days directly from the dial.
* Manual Run: Run an individual zone, a full program, or a test cycle across all 4 stations.
Basic Dial Quick Reference
* Set Clock / Calendar: Adjust date, year, and current time.
* Start Times: Set up to 4 daily cycles per program.
* Run Times: Set duration (minutes/hours) for zones 1 through 4.
* Run Days: Select watering frequency (custom days, odd/even, or interval).
* Auto Run: The normal operating position for scheduled watering.
* Off: Cancels active watering and shuts off automatic schedules.
