Dungs AA-A2-6-3 Differential Air Pressure Switch

The Dungs AA-A2-6-3 Differential Air Pressure Switch is an electrical switch activated by a difference in air pressure, converting a sensed pressure difference into a switch signal that can drive control circuitry. It is identified by part number 266934 and follows the AA-A2-6-3 configuration from Dungs. The specification lists a differential pressure range of 0.4–4 inches with a maximum rating of 7 psi, clarifying the pressures at which the device will respond and how much differential it can withstand. When the detected pressure difference crosses the predetermined threshold within this range, the switch changes state, providing a discrete output for a connected system. This model is designed for installations that require a defined, low-to-moderate differential pressure trigger, and the 0.4–4 inch window indicates sensitivity appropriate for monitoring relatively small air pressure differences.