Check the listing for details. for Hayward H-Series Low Nox Heater High Limit 135 FDXLHLI1930 HAXHLI1930 Sensor. Condition: New. Listed at 49.89 USD. Fitment:This HAXHLI1930 sensor and FDXLHLI1930 high limit replacement kit is compatible with Hayward Universal H-series Low Nox pool heater models H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP, H500FDN, H500FDP Features: 1) The 135 degree Fahrenheit high limit heater part kit is fit for Hayward Universal H-Series H150FD, H200FD, H250FD, H300FD, H350FD, H400FD, H500FD Low Nox Pool Heater 2) The high-limit pool heater parts kit replace for Hayward H-Series high-limit kit, replacing the OEM part NO. FDXLHLI1930 3) The high-limit kit is made of quality materials, including copper, rubber, and plastic. The pool heater parts kit included one line kit and one sensor Package included:HAXHLI1930 sensor and FDXLHLI1930 high limit replacement kit