Aeromotive DNS2-1943-00 Dual Stage Pressure Switch 0.20/0.40 W.C.

The DNS2-1943-00 is a dual-stage air pressure switch designed for applications requiring two independent set points at 0.20" and 0.40" water column. This precision switch features two glass-filled polycarbonate housings, each containing a sensing diaphragm and integral snap-acting switch mechanism.

Key Features:

• Dual set points: 0.20" W.C. and 0.40" W.C. for staged operation
• Glass-filled polycarbonate construction for durability and stability
• Integral snap-acting switches for reliable performance
• Can be actuated by positive or negative pressure differential
• Color-coded pressure ports for easy identification
• Compact dual-switch design in single mounting unit

Commonly used in HVAC applications including two-stage furnaces where separate high-fire and low-fire pressure monitoring is required. The switch activates at the specified pressure differentials to signal control systems for proper air flow and combustion safety.