Carrier HK02SB022 Pressure Switch 320788 703 Product Features and Contractor Benefits Product Features and Contractor Benefits Dual Function Control: Combines low pressure and high pressure monitoring in a single compact enclosure to save rail space and piping complexity Adjustable Sensitivity: Fine tune the pneumatic output from 1 4 to 4 psi per 1% RH to match your specific system requirements Integrating this Factory Authorized Part into your commercial rooftop unit or residential split system maintains the operational integrity required for high efficiency performance Please contact our team to confirm compatibility or technical details before purchasing