This is a pressure switch with model number RT1AL. It has a wide range of features and specifications for users to consider. Pressure - related Parameters The maximum test pressure [bar] Pe is 25 bar, and in pounds per square inch gauge (psig), it is 363 psig. The highest working pressure is 22 bar (320 psig). The adjustment range [bar] Pe spans from -0.8 bar to 5 bar. The contact hysteresis is 0.2 bar. The pressure connection size is 12 x 1.5, and the connection type is M, with the connection standard being ISO 8434 - 1. The pressure connection has male/female threading as external threads, and the pressure sensing element is a bellows. Electrical - related Parameters For electrical connections, it follows the standard DIN 40430. The electrical connection size is 2xPg 13.5, and the form of the electrical connection is internal threading. The electrical specification standard is EN 60947 - 4/-5. Regarding the electrical properties according to EN 60947, it has insulation up to 400V, a pollution level of 3, and a rated impulse voltage of 4 kV. Short - circuit protection is provided by a 10A fuse. The contact function is SPDT (Neutral Zone), and the contact capacity includes AC15 = 3 A, 400 V; AC1 = 10 A, 400 V; AC3 = 4 A, 400 V; DC13 = 12 W, 220 V; LR = 28 A, 400 V. The wiring properties according to EN 60947 are as follows: for flexible wires with ferrules, it can handle 0.2 - 1.5 mm²; for flexible wires without ferrules, 0.2 - 2.5 mm²; and for solid or stranded wires, 0.2 - 2.5 mm². Environmental and Protection - related Parameters The enclosure protection class is IP66. The environmental temperature range in Celsius is from -50 °C to 70 °C, which is equivalent to -58 °F to 158 °F in Fahrenheit. This pressure switch is a reliable and high - performance product suitable for a variety of industrial applications, meeting different requirements in terms of pressure control and electrical connection.