this board is the exact technical equivalent of the LH33WP002 and is engineered for precise spark timing control

we see these fail due to restricted airflow from oversized filters or blower motor degradation

replacing it with this 1014525 assembly is the standard solution to restore the draft needed to close the switch

They are not interchangeable as they require different sheave configurations

it operates within a temperature range of -40°F to 50°F (-40°C to 10°C) with a rated orifice capacity of 0

Dwyer Instruments 1950-20-2F Pressure Switch 328140-751 this board is the exactThe Dwyer Instruments 1950 20 2F Pressure Switch is a trade standard solution for monitoring differential pressure in hazardous locations. Engineered as an explosion proof alternative to the Series 1900, this unit integrates a weatherproof housing that meets NEMA 3, 7, and 9 ratings. With an adjustable range of 4 to 20" w. c. and a tight deadband of 0. 40 to 0. 60, it provides precise control for HVAC systems, fan proof of flow, and filter monitoring.