CO2, Temp., RH controller with relay AZ7731

AZ 7731 is a modern, stationary CO₂, temperature, and humidity monitor/controller, designed for continuous monitoring of air quality in occupied spaces. The device is ideal for offices, schools, conference rooms, and public buildings, as well as ventilation and air conditioning (HVAC) systems.

A built-in, stable CO₂ sensor with NDIR technology ensures precise, real-time measurement of carbon dioxide concentration. Results are presented on a large, color display, which simultaneously shows CO₂, temperature, and relative humidity values. Additionally, the device is equipped with a three-color light signal (green / yellow / red) that informs about the current air quality.

AZ 7731 also offers an audible signal function with the option to mute it and the ability to view average CO₂ values ​​(8-hour and 24-hour) and the maximum value from the last 24 hours.

The device is equipped with a relay output that allows control of external devices - such as ventilation systems, air conditioning or alarm systems - when the set CO₂ thresholds are exceeded. This makes it not only a monitor, but also a component of a building automation system.

Additional advantages include the ability to adjust the display brightness (3 levels), manual calibration, and a design adapted for installation in a standard installation box (flush box), which facilitates integration with existing infrastructure.

AZ 7731 is powered by mains power (100-240V AC) or 5V DC, ensuring installation flexibility.

APPLICATION
AZ 7731 controller is designed for continuous monitoring of air quality and control of ventilation and air conditioning systems. Can be used in: - offices, schools, and conference rooms - public buildings - technical rooms - HVAC systems, including those with heat recovery - automatic ventilation control systems - air conditioning systems ... installation

ADVANTAGES

• Simultaneous measurement of CO₂, temperature, and humidity
• Accurate NDIR carbon dioxide sensor
• Large color display showing all parameters
• Air quality indicator (green / yellow / red)
• Built-in audible alarm with mute option
• Relay output (dry contact) for device control
• Reading average and maximum CO₂ values
• Display brightness adjustment (3 levels)
• Manual calibration possible
• Mounts in a standard junction box