Lennox 69W57 Pressure Switch 2-Stage

The Lenox 69W57 Two-stage pressure switch mainly applied to HVAC equipment such as air handling unit, fan coil unit, and ventilation. It controls the air pressure and operates electrical parts when the pressure reaches the set high and low pressure, This switch helps to avoid equipment damage and to guarantee that the airflow is correct for the system. The Lenox is tiny and measures only 0.51 inches; It is a single-pole single-throw switch and functions on a 24V AC electrical supply. Depending on pressure, the switch can help maintain better air quality, reduce noise and possibly save money on utilities.