Dwyer DXW-11-153-4 is a wet/wet differential pressure switch designed for a temperature range of 30 to 140°F (-1 to 60°C). It is housed in a weatherproof UL type 4X (IP65) enclosure, making it suitable for both indoor and outdoor use. The switch has a maximum static pressure rating of 200 psig (13.8 bar) and a maximum differential pressure of 1.25 times the highest set point. It features a SPDT snap switch with an electrical rating of 5 A @ 125/250 VAC, 5 A res. @ 30 VDC. The switch is compatible with gases and liquids and has a 1/4" NPT female process connection. It has an external screw for set point adjustment and a removable terminal block for electrical connections. The enclosure housing is made of aluminum, housing is made of polycarbonate, and cover is made of 300 SS. It has a humidity tolerance of 80% (non-condensing) and a vibration tolerance of 2.5 Gs, 5 to 500 Hz. The switch is designed for ports on a horizontal plane, ±10° mounting orientations. It has a repeatability of ±2% of full range and a pollution degree of 2. The conduit connection is a 0.871" diameter hole for a 1/2" conduit fitting.