| DWYER INSTRUMENTS 1910-10 Pressure Switch Series 1900 Pressure Switch, Application Frost and Ice Detection, Clogged or Dirty Filter Detection, Air Flow Control, Contact Form SPDT, Electrical Connection Type Screw Terminals, Electrical Rating 1/4 hp @ 250 V AC, 60 Hz, 15 A @ 120 to 480 V AC, 60 Hz,... more | | $78.15 go to store |