Brand: K-Rain SKU: 3504Product OverviewThe K-Rain 3504 RPS 46 is a compact four-station indoor irrigation controller for residential lawns, gardens, and planted areas. It uses a 110-volt external transformer and provides independent scheduling for four conventional 24 VAC irrigation zones.Four fully independent programs allow different parts of the landscape to follow separate schedules. Each program supports up to four start times, for a maximum of sixteen starts per day. Seasonal adjustment from 10% to 200% makes it possible to change all programmed run times without rebuilding each schedule. The controller also supports rain and rain/freeze sensors, flexible manual operation, a system-test function, and battery-backed program retention.This is the 3504 four-station, 110V model. It is an indoor controller and must be installed in a dry protected location. The external transformer and plug are part of the model configuration. Confirm the number of zones, valve electrical load, sensor type, outlet location, and enclosure environment before ordering. This model is not expandable beyond its four fixed stations.Key Features Four fixed irrigation stations 110V external transformer and plug Four independent programs Four starts per program; sixteen starts per day maximum Seasonal adjustment from 10% to 200% Rain and rain/freeze sensor ready Manual program, station, and system-test operation Battery-backed program memory Common Uses Small residential sprinkler systems Separate lawn and garden schedules Indoor replacement for a matching four-zone controller Fixed four-zone irrigation installations Compatibility and Installation Notes Install indoors in a dry protected location. Confirm the system has no more than four conventional 24 VAC zones. Compatible weather sensors are sold separately. This model is fixed at four stations and is not modular. Follow current K-Rain transformer, valve, and sensor wiring instructions. Frequently Asked QuestionsCan the 3504 be installed outdoors?No. It is an indoor model with an external transformer and should be installed in a protected dry location.How many watering programs are available?It has four independent programs with up to four start times per program.Can it be expanded to six stations?No. The 3504 is a fixed four-station controller. The RPS 46 family includes separate six-station models.Why Buy This K-Rain 3504 from Big Frog Supply?Big Frog Supply identifies the exact four-station, 110V indoor configuration so customers do not confuse it with the six-station or 220V RPS 46 models.