White-Rodgers - Dual Air Purpose Air Switch, Responds to Positive, Negative or Differential Air Pressure. Operating Range .07 To 12" W.C., Switch Action SPDT
Features: Design eliminates "fluttering" or malfunction due to shock or vibration normally encountered with "sail switches." Wide operating range. Furnished with one 12" piece 1/4" O.D. flexible tubing, nuts and ferrules. Can be mounted in any position except upside down. Enclosed diaphragm.
Warning: this product contains a chemical known to the State of California to cause cancer. P65Warnings.ca.gov