Dwyer DXW-11-153-3 is a wet/wet differential pressure switch that can handle temperatures from 30 to 140°F (-1 to 60°C). It has a weatherproof UL type 4X (IP65) enclosure rating and can withstand humidity up to 80%. The product is made with an aluminum body, polycarbonate housing, and a 300 SS cover. It can be used with compatible gases and liquids and has a maximum static pressure of 200 psig (13.8 bar). The switch has a 1/4" NPT female process connection and a SPDT snap switch. It also has an external screw for set point adjustment and is intended for indoor and outdoor use.