Zodiac R0011800 Electronic Temperature Sensor Replacement for Select Zodiac Jandy Pool and Spa Heaters Electronic temperature sensor replacement Fits Zodiac Jandy Lite2 LD, LG pool and spa heater models 125, 175, 250, 325, 400 Also fits Zodiac Jandy LX/LT, LX/LT Low Nox, Hi-E2 pool and spa heater models 250, 350, 400