This Rain Bird 636015-06 ESP-40MC / SAT 40 controller output module is a brand-new replacement 40-station output board for ESP-40MC / SAT 40 irrigation controller systems. Still sealed in the original bag, this module is a strong repair/replacement option for commercial irrigation, golf, municipal, campus, and large-site sprinkler control systems where keeping an existing ESP-MC/SAT controller online is easier than rewiring or replacing the full controller. Ideal for contractors, facilities teams, and irrigation techs needing a clean spare output board for field service, controller restoration, or discontinued-system maintenance.
