and all necessary O-rings (piston

3 ohms typically indicates the need for replacement

This 115V single-phase model is a direct replacement for 2815-004

Self-powered operation draws induction from the monitored line

Cleveland Controls NS2-1333-02 Pressure Switch 318172-701 and all necessary O-rings (pistonThe Cleveland Controls NS2 1333 02 Pressure Switch is a critical safety and operational component designed for high performance HVAC air pressure sensing. Engineered for residential and commercial furnaces, this differential air pressure switch monitors draft inducer performance to ensure proper combustion airflow before ignition. The NS2 1333 02 is factory set to precise specifications, featuring a sensitive diaphragm and snap acting SPST electrical