and the gray port is for negative (P2) or vacuum pressure

Nitrile Seal Compatibility: Optimized for air

is a heavy-duty barometric draft control engineered for precision regulation in oil-fired boilers

providing a direct drop-in fit for numerous Lennox rooftop units and split systems

Veris Industries TW2LAXA Sensor R-410A and the gray port isThe Veris Industries TW2LAXA Sensor is a professional grade wall mount temperature transmitter designed for precise environmental monitoring in commercial BAS and HVAC applications. Engineered for seamless integration with controllers accepting 4 20mA, 0 5Vdc, or 0 10Vdc analog outputs, this unit features a robust segmented LCD display with three tactile buttons for local monitoring and field adjustments. Operating within a 32 122F (0 50C) range, the