Pentair 475601 | ETi Stack Flue Sensor 2 Day Handing Time this allows the 3-Step pool

this allows the 3-Step pool care product creating a synergistic effect for optimal pool health

allowing you to set the perfect temperature for those refreshing dips or relaxing soaks

Chemical Resistant

It easily installs on existing Fiberstars 6000 series illuminator bases

PLDE series filter model PLDE48

Pentair 475601 | ETi Stack Flue Sensor 2 Day Handing Time this allows the 3-Step poolGenuine Replacement part: Works with ETI 400 heaters. Each heater has two stack flue sensors. Monitors temperature inside the heater. The stack flue sensor will shut down the heater is the temperature in the heater is anywhere close to 170 F (77 C).