Daikin-McQuay RXRX-AR02 Wall-Mount CO2 Sensor and Controller for HVAC Ventilation

The Daikin-McQuay RXRX-AR02 is a stand-alone wall-mounted carbon dioxide (CO2) sensor and controller designed for use with commercial HVAC systems. It continuously measures CO2 concentration in occupied spaces and communicates with HVAC controllers to regulate the delivery of fresh outdoor air, helping maintain healthy indoor air quality.

This sensor is an ideal solution for demand-controlled ventilation (DCV) applications, allowing HVAC systems to bring in only the amount of fresh air needed based on actual CO2 levels — improving both occupant comfort and energy efficiency.

Key Features:

• Non-Dispersive Infrared (NDIR) Technology — industry-standard measurement method for accurate, reliable CO2 detection
• Gold-plated sensor element for long-term calibration stability and extended service life
• Automatic Background Calibration (ABC) algorithm reduces the need for routine zero-drift maintenance checks
• Voltage output based on measured CO2 levels for seamless integration with compatible HVAC controllers
• Wall-mount design for room-level CO2 monitoring in occupied spaces
• Used in ventilation and air conditioning systems to maintain acceptable indoor CO2 levels

The RXRX-AR02 is also cross-referenced as the Honeywell C7232A1008 CO2 sensor, making it compatible with a wide range of commercial HVAC control platforms. It is well-suited for schools, offices, and other commercial buildings where indoor air quality management and ventilation control are critical.