The UNI-T CO₂ Carbon Dioxide Meter A37 is a reliable and accurate air-quality monitoring device designed to measure carbon dioxide (CO₂) levels in indoor environments. This digital CO₂ meter helps ensure healthy air quality by providing real-time readings, making it ideal for homes, offices, schools, hospitals, and industrial workplaces. The UNI-T A37 CO2 meter is easy to use and features a clear digital display that allows users to quickly monitor carbon dioxide concentration. Maintaining proper CO₂ levels is essential for comfort, productivity, and health, especially in closed or crowded spaces. This meter helps identify poor ventilation and supports timely corrective actions. Built with UNI-T’s trusted quality, the A37 delivers stable performance and dependable accuracy. It is widely used by HVAC technicians, facility managers, safety officers, and environmental monitoring professionals across Pakistan. Its compact design makes it portable and convenient for continuous monitoring. Features: Automatic baseline correction Audible and visual alarm Low battery indication Auto power off Backlight Specifications: Carbon dioxide range: 400ppm~5000ppm Carbon dioxide resolution: 1ppm Carbon dioxide precision: ±5%rdg + 50ppm from 400ppm~2000ppm (at ambient temperature and humidity) Relative humidity range: 0%RH~99%RH Relative humidity resolution: 1%RH Relative humidity precision: Typical accuracy: ±5%RH (10%RH～90%RH) at 25℃ Temperature range: -10.0℃~50.0℃ Temperature resolution: 0.1℃ Temperature precision: ±1℃ ABC: Automatic baseline correction Audible and visual alarm: Yes Sensor type: NDIR (no-dispersive infra) CO2 sensor Response time: T90 < 2 minutes Date/time: Display the date and time Low power display: Low power symbol keep flashing Auto power off if no operation for a long time Backlight: The white backlight can be turned on/off. Operating temperature: 0℃～50℃, 0%RH～85%RH Storage temperature: -20℃～60℃, 0%RH～95%RH Power: 3.7V DC Li-ion battery/ Micro USB charging port LCD size: 42 x 65mm Product Colour: White Product net weight: about 195g Product size: 75 x 55 x 130mm Uses: Indoor air quality monitoring Offices and commercial buildings Schools, hospitals, and classrooms HVAC system evaluation Industrial and workplace safety Package Includes: 1 x UNI T CO2 Carbon Dioxide Meter A37