The Hayward HAXTLK1930 Temperature Limiters Kit is a vital replacement for maintaining your H-Series ED1 or ED2 pool and spa heaters. Engineered to ensure safety and consistency, it prevents overheating and regulates temperature effectively. This kit includes one manual reset and two auto-reset high-limit switches, ensuring all essential components are covered for efficient temperature management. Compatible with specific Millivolt/Electronic ED1 and Electronic ED2 models, this kit guarantees reliable operation for your Hayward heater.