Dwyer A1F-O-SS-1-3 is an OEM pressure switch with a temperature range of -40 to 175°F (-40 to 80°C). It has no enclosure rating but can be upgraded to meet NEMA 4X standards. The switch has screw terminals for electrical connections, and can be mounted within 20° of vertical. It is compatible with both liquids and gases, with a pressure limit of 500 psig (34 bar). The pressure chamber is made of 316 SS and the diaphragm is made of fluorocarbon. The switch is SPDT snap switch type and has a set point adjustment with indicating scale. Electrical rating is 15 A @ 120/240/480 VAC, 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC. The switch has a fixed deadband, and the minimum and maximum deadband values can be found on the Order page.