Dwyer APS-250 is an Adjustable Pressure Switch designed to withstand temperatures from -65 to 225°F (-54 to 107°C), with a set point change of up to 2% below -10°F (-23°C) or above 125°F (52°C). It features 3-wire, 20 AWG insulated PVC electrical connections with a 12" (30 cm) length. The switch is suitable for use with compatible liquids or gases and has a wetted material of 17-7 PH SS for the capsule and 303 stainless steel for the fitting. It has a 1/8" male NPT process connection and operates at an electrical rating of 5 A @ 250 VAC and 3 A @ 28 VDC. The switch type is SPDT snap action, with a maximum cycling rate of 20 CPM. The set point is field adjustable and the sensor element is a capsule. The pressure/vacuum limits are 150% of the range.