Rainbird National Sls SST-400IN 4-station Timer

Product Description

The RAINBIRD NATIONAL SLS SST-400IN is a 4-station indoor irrigation timer designed for straightforward programming and reliable zone control in residential and light commercial sprinkler systems. The large, easy-to-read display simplifies setup and daily operation. Each zone is programmed independently, giving installers and service techs precise control over run times and schedules. All programmed settings are stored in permanent memory, eliminating the need for battery backup and ensuring schedules survive power interruptions without reprogramming.

This timer is suited for indoor installation in residential homes and light commercial properties where a clean, wall-mounted controller is preferred. It is appropriate for systems with up to four irrigation zones. The seasonal adjust feature allows watering run times to be scaled up or down across all zones simultaneously, useful for adapting to hot, dry months or rainy seasons without rewriting individual zone programs. A rain delay command enables manual suspension of watering cycles when precipitation makes irrigation unnecessary.

Key Features

• Controls up to 4 independent irrigation zones with individual scheduling
• Large, easy-to-read display for quick programming and status checks
• All settings stored in permanent memory — no battery backup required
• Seasonal adjust scales run times up or down across all zones simultaneously
• Rain delay command manually suspends watering cycles
• Indoor-rated enclosure for wall-mount installation

Compatibility

Designed as an OEM-style indoor irrigation timer for residential and light commercial 4-zone sprinkler systems requiring a simple, programmable controller.

Installation Notes

Installation is typically performed by a licensed irrigation contractor or qualified technician. Power down the irrigation system and disconnect the transformer before wiring zone valves to the controller terminals. Follow local electrical codes when routing low-voltage wiring from the controller to field valves. Consult the manufacturer wiring diagram for proper common and zone terminal connections before energizing the unit.