Zodiac 7441 1-Inch to 1-1/2-Inch White 4 Function SpaLink Remote Replacement for Zodiac Jandy AquaLink RS Control System, 100-Feet 4 Function spalink remote replacement Spa side control of desired water temperatures and other pool and spa features Install up to three (3) Spa Side Remotes on one (1) AquaLink RS system Available in white color Measures 2-3/4-Inch in diameter