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Jandy Hi-Limit Switch Replacement Kit, 135°F | R0022700 PoolMaster Upgrade your pool or spaJandy 135 Degree F Hi Limit Switch Replacement Kit Jandy 135 Degree F Hi Limit Switch Replacement Kit Jandy replacement part for pool systems. The R0022700 135 Degree F Hi Limit Switch Replacement Kit restores high temperature safety. It is a safety component in pool heating systems that detects excessive heat and stops the heater. This kit replaces a failed hi limit switch to restore proper shutoff. Designed for professional pool service, it helps