24V HVAC Differential Air Pressure Switch – Adjustable 20–5000Pa
A reliable differential air pressure switch designed for HVAC and building automation systems. Featuring an adjustable setpoint and silicone diaphragm, it provides accurate airflow and filter monitoring across a 20–5000Pa range.
This differential air pressure switch is engineered for monitoring air pressure differences in HVAC ducts, air handling units, clean rooms, and ventilation systems.
Designed for low-pressure air applications, the unit detects pressure differentials typically associated with airflow verification, filter status monitoring, fan proving, and duct pressure control. The adjustable setpoint allows technicians to configure the switching threshold according to system requirements.
A high-quality silicone membrane provides stable performance across a wide temperature range (−20°C to +85°C), ensuring long-term reliability in commercial and industrial environments.
Operating on a 24V control circuit (commonly used in HVAC systems), the switch integrates easily with building management systems (BMS), relays, and automation controllers.
The compact housing supports wall or panel mounting near ductwork, with standard hose barb connections for positive and negative pressure ports.
Typical applications include:
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Air filter clog detection
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Fan status proving
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Airflow monitoring
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Duct static pressure control
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Cleanroom pressure monitoring