Robertshaw 2374-499

Robertshaw 2374-499 is a SPDT Adjustable Differential Pressure Switch designed for precise pressure control in HVAC and pneumatic applications. This unit offers an adjustable setpoint from 0.05" to 12.0" W.C., enabling exact tuning for airflow, draft sensing, and safety monitoring. Replacing existing components is straightforward, as this model replaces 2374-410, RH3A, and RH3-AR.

Built for reliability, the 2374-499 delivers consistent performance in fluctuating conditions. The SPDT output supports easy integration with control relays and safety circuits, simplifying wiring and control logic. Its compact, rugged design suits tight panels and demanding environments.

• SPDT switching for flexible control of two circuits
• Adjustable setpoint from 0.05" to 12.0" W.C. for precise tuning
• Replaces 2374-410, RH3A, and RH3-AR; easy retrofit
• Compact, durable housing ideal for crowded panels and tight spaces
• Reliable response to pressure changes in HVAC and pneumatic systems