KETOTEK CO2 Monitor Indoor Air Quality Meter, Temperature, Humidity Display, Portable Carbon Dioxide Meter for Home, Car, Office or School

Price: $49.99 - $42.49
(as of Oct 08, 2026 21:37:31 UTC – Details)

Product description

3-level Backlight Mode Adjust the brightness of the backlight to save energy

When powered by a USB power supply, the backlight brightness of this CO2 monitor is adjustable.

Turn off the backlight of this CO2 monitor before going to sleep. Monitor the air quality in your bedroom in real time without compromising sleep quality.

High-precision CO2 Sensor Swiss Sensirion industrial-grade photoacoustic sensor

The CO2 monitor uses a CO2 and temperature and humidity sensor from Sensirion in Switzerland. The sensor is based on the principle of photoacoustic (PAS).

It has high detection sensitivity, fast time response, continuous real-time monitoring, small volume, and can achieve multi-component gases, which makes up for the shortcomings of NDIR technology.

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.