K-Rain 3504 RPS 46 4-Station Indoor Irrigation Controller Brand: K-Rain | SKU: 3504 Product Overview The K-Rain 3504 RPS 46 is a four-station indoor irrigation controller for small residential lawns, gardens, and planted areas. It operates conventional 24 VAC irrigation valves through a 110V external transformer and lets each of its four zones follow an independent watering schedule. This fixed-station controller supports four programs, up to four start times per program, seasonal adjustment, manual operation, system testing, and compatible rain or rain/freeze sensors. Before ordering, confirm that the system has no more than four zones and that the controller will be installed indoors near a suitable outlet. This model is not expandable. Key Features Controls four conventional irrigation zones Four independent programs with up to four start times each Seasonal adjustment from 10% to 200% Manual program, station, and system-test operation Rain and rain/freeze sensor ready Battery-backed program memory Common Uses Small residential sprinkler systems Separate lawn and garden watering schedules Replacing a compatible four-zone indoor controller Technical Specifications Model: 3504 Stations: 4 fixed stations Input Configuration: 110V external transformer and plug Valve Output: 24 VAC Programs: 4 independent programs Maximum Start Times: 16 per day Seasonal Adjustment: 10%–200% Installation Location: Indoor, dry and protected Compatibility & Installation Notes Confirm the station count, valve electrical requirements, sensor type, outlet location, and indoor mounting environment before ordering. Compatible weather sensors are sold separately. Follow current K-Rain instructions for transformer, valve, and sensor wiring. Frequently Asked Questions Can the K-Rain 3504 be installed outdoors?No. It is an indoor controller and should be mounted in a dry, protected location. How many watering programs does it support?It provides four independent programs with up to four start times per program. Can this controller be expanded beyond four stations?No. Model 3504 has four fixed stations and is not modular. Is a rain sensor included?No. The controller accepts a compatible rain or rain/freeze sensor, but the sensor is sold separately. Why Buy the K-Rain 3504 RPS 46 Controller? Big Frog Supply organizes the station count, power configuration, scheduling features, and installation requirements so homeowners, contractors, and maintenance teams can compare SKU 3504 with other RPS 46 models before ordering.
