Series RFS switches are reliable, economical switches with field-adjustable or factory calibrated set points between 0.15″ wc and 5″ wc. Numerous standard configurations are available, including mounting choices, sample line connector styles , terminal styles , and open or enclosed terminals. Many options are available also, including manual reset, set point indication, alarm light, time delayed actuation, electronic dual set points, and NEMA-rated enclosures.