making it a drop-in replacement for standard DIN-sized cutouts or surface installations

This 1K platinum RTD eliminates the drift common in thermistor-based sensors

What is the correct pressure setting for this switch

If the switch has no continuity even after pressing the manual reset button

protecting the equipment from backdrafts and improper combustion

EWC Controls PRD Regulating Damper 30067439-890 making it a drop-in replacementEWC Controls PRD 12" Pressure Regulating Damper Made in USA. Model PRD RD pressure regulating damper is a single blade, round variation of a barometric relief damper. This is the simplest, most economical way of bypassing excess static pressure in multi zone applications. Resistance is controlled by offsetting the arm and adjusting the weights. The arm can be inserted into either side of the damper for added versatility.