Wide Application: GL-235 controller handles all systems using energy freely provided by nature for solar pool heating systems. Designed for swimming pools, spas, hot tubs heating and cooling, 12/24VAC and 120/240VAC output. A variety of installer programmable features are available to adapt to any system. Set & Maintain Ideal Water Temperature: Pool temperature controllers allow you to set and maintain your ideal water temperature without using a pool heater. Single-setting adjustment allows users to easily select their desired temperature and high limit (from 75°F to 104°F). Quick, easy, user-friendly operation will help pool owners maximize system functionality. .
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