Air Pressure Sensing Switch, 0.05" ± 0.02" - 12" w.c., 1/4" OD Sample Line Connection, SPDT Contact Arrangement, Air or Combustion By-Products that will not Degrade Silicone, 1/2 Psi Max...
Air Pressure Sensing Switch, 1.25" ± 0.06" - 12" w.c., 1/4" OD Sample Line Connection, Two SPST Normally Closed Contact Arrangement, Manual Reset, For Use with Air, 1/2 Psi Max...