Johnson Controls S-224-2 Pneumatic Gradual Switch 6 PSI Span

The Johnson Controls S-224-2 Pneumatic Gradual Switch is a precision instrument of the HVAC system that measures and regulates the air pressure from 0 to 6 psi. In HVAC systems, the air pressure is precise for the functioning of many pneumatic devices and controls. This switch measures changes in pressure and responds by either making changes or sounding an alarm. It is applied in measuring the duct pressures, regulation of fan speeds, and control of air flow for heating ventilation, and air conditioning systems as to ensure that it operates smoothly and provides comfort.