The SAUTER 2115209 is a genuine 4-pole pressure switch, model DSB146F001, designed for precise pressure monitoring and control in heating, ventilation, and air conditioning (HVAC) systems. It is suitable for air, non-corrosive gases, and liquids, offering an adjustable pressure range of 0.2 to 6 bar and a maximum permissible pressure of 16 bar. This robust pressure switch features a G 1/4" internal thread process connection, screw terminals for electrical connection, and a durable die-cast aluminium housing. With an IP54 protection class, it ensures reliable operation in various environmental conditions, supporting medium and ambient temperatures from -20 to 70 °C. The 4-pole changeover switch (SPDT) has a contact rating of AC 250 V, 16 (8) A.