CO2 Gadget is a firmware for creating high-quality CO₂ monitors that are every bit as good as commercial ones. Apple web interface, Home Assistant, MQTT, BLE, ESP-NOW, low power consumption, over 20 sensors. Open source and free.
CO2 meter with colour display and Bluetooth connection. Take it with you everywhere and measure the air quality discreetly and at any time.
CO2 meter with App for Android and iOS, via Bluetooth, official from the sensor manufacturer Sensirion
How good is a home CO2 meter compared to a commercial one?
Discover all the secrets of the MH-Z19B CO2 sensor in one place. An inexpensive, accurate (for the price) and very easy to use CO2 sensor.
