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The United Spa Controls EL121 is a hi-limit sensor designed for spa systems manufactured before December 2013. This component plays a vital role in maintaining safe operational temperatures, preventing overheating, and ensuring reliability in spa and hot tub systems.
The sensor is robust and user-friendly, making it a necessary part for spa maintenance.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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