This is a high - quality pressure switch named KP44 (model number: KP44), which is a dual - pressure controller. 1. Pressure - related Parameters The left - hand side adjustment range [bar] Pe is from 2 to 12, and the right - hand side adjustment range [bar] Pe is from 0.5 to 6. In terms of pounds per square inch gauge (psig), the left - hand side adjustment range Pe is from 29 psig to 174 psig, and the right - hand side is from 7 psig to 87 psig. The left - hand side maximum working pressure [bar] Pe and the right - hand side maximum working pressure [bar] Pe are both 17 bar (equivalent to 245 psig). The left - hand side maximum test pressure [bar] is 25 bar, and the right - hand side maximum test pressure [bar] is 19 bar. The left - hand side hysteresis [bar] ranges from 0.7 to 4, and the right - hand side hysteresis [bar] is 1. In pounds per square inch, the left - hand side hysteresis ranges from 10 psi to 58 psi, and the right - hand side is 14.5 psi. The pressure connection size is 1/4, with a pressure connection standard of ISO 228 - 1 and a pressure connection type of G. The pressure 公头 / 母头 is external thread, and the pressure sensing element is a bellows. 2. Electrical Parameters The contact function is SPST(NO)+SPST(NC), and the contact capacity is as follows: AC15 = 10 A, 400 V; AC1 = 16 A, 400 V; AC3 = 16 A, 400 V; DC13 = 12 W, 220 V; LR = 112 A, 400 V. For EN 60947 wiring attributes, it supports flexible wiring with ferrule for 0.5 - 1.5 mm², flexible wiring without ferrule for 0.7 - 2.5 mm², and solid / stranded wire for 0.75 - 2.5 mm². In terms of EN 60947 electrical attributes, the insulation is 400V, the pollution level is 3, the rated impulse voltage is 4 kV, and the short - circuit protection fuse is 16A. The electrical connection is made through a rubber cable gland, and the electrical connection size is 6 - 14 mm. 3. Environmental Parameters The ambient temperature range [°C] [lowest] is - 40 °C, and the ambient temperature range [°C] [highest] is 65 °C. In Fahrenheit, the ambient temperature range [°F] [minimum] is - 40 °F, and the ambient temperature range [°F] [maximum] is 149 °F. However, it should be noted that the temperature can reach 80 °C/176 °F for a maximum of 120 minutes. The enclosure protection class IP is IP22, and the enclosure protection class Nema (~) is 2. This pressure switch has passed multiple approvals, including CCC, CE, CMIM, EAC, etc., ensuring its high quality and compliance with relevant standards.