Key Features

• 3-in-1 Indoor air quality monitor: CO2 detection range: 400-5000PPM. Temperature detection range: 14.2°F to 140°F (-9.9 to 60 °C). Humidity detection: 20% to 95%. This portable carbon dioxide detector supports desktop or wall mounting.
• Extra-large viewing angle VA display: No need to worry about air quality anymore. Screen displays CO2 concentration, temperature, humidity, comfort indicator, CO2 concentration level, ventilation prompt, and low battery alert. Screen brightness is adjustable.
• Visual and Voice Reminder: 6 CO2 concentration levels with voice reminder functionality to monitor air quality and determine when ventilation is needed. The sound can be turned off. Suitable for classrooms, offices, waiting rooms, children's rooms, and homes.
• High-precision sensor: This CO2 monitor is equipped with a Swiss Sensirion industrial-grade photoacoustic sensor. Its high sensitivity and stability compensate for the limitations of NDIR technology, ensuring fast and accurate air quality monitoring. Accuracy is ±50 ppm.
• USB-powered and battery-powered: In mains power mode, CO2 values are updated every 6 seconds. In battery mode, the CO2 monitor continues to function normally. Simply press the CO2 button manually to measure CO2 concentration.

Specifications