and WTGO units

and Gemline

For long-term reliability and to prevent repeat service calls

drop-in installation on rear panels or within internal control housings

Optimized System Efficiency: Provides accurate outdoor air temperature data to the control board to refine heating and cooling staging

White-Rodgers 3L09-11 Limit Switch and WTGO unitsProfessional grade White Rodgers 3L09 11 board mounted limit switches provide critical high limit protection for furnace and air handling systems. As a veteran trusted fixed temperature limit switch, this 1 2" bimetal disc control features a fixed open temperature of 210F and a fixed close temperature of 170F. Its Open on Rise switch action ensures immediate contact separation whenever thermal thresholds are exceeded, protecting residential and