The DP4T slide switch travel can be modified by installing specific switch legend plates (ordered separately)

and one yoke nut to facilitate a complete mechanical link

With inside dimensions of 7-1/16" L x 4-1/8" H x 2-1/4" D for the ring base

allowing for accurate probe placement within the supply plenum air stream

and a reliable pressure regulator into a single

Honeywell SP3000-WR Probe Freon The DP4T slide switch travelThe Honeywell SP3000 WR is a specialized water resistant temperature probe engineered for precision monitoring in high moisture HVACR environments. This 2 inch stainless steel thermistor probe features a 5 foot lead wire, providing the necessary reach and durability for immersion or surface mount applications where standard sensors fail due to moisture ingress. As the direct replacement for Honeywell 198212CA, the SP3000 WR maintains exact resistance