The UNIT CO2L is a digital air CO2 concentration detection unit with a single-measurement low-power mode, built-in Sensirion's SCD41 sensor, power buck circuitry, and I2C communication. The unit is suitable for the measurement of ambient conditions with a typical accuracy of ± (40 ppm + 5 % reading) for CO2 measurements with a measuring range of 400 ppm – 5000 ppm. Features * CO2 concentration detection * Temperature and humidity measurement * Low power consumption (single measurement supported) * Integrated 5V -> 3.3V LDO * HY2.0 4P interface Specifications Resources Parameters Sensor SCD41 CO2 measurement range 400 ~ 5000 ppm CO2 sampling accuracy ±(40 ppm + 5% of reading) Temperature range -10 - 60 °C Humidity range 0 - 95 %RH Communication protocol I2C:0x62 Product Size 48mm × 24mm × 16mm Package Size 136mm × 92mm × 13mm Product Weight 7.4g Package Weight 12.3g Resources * Product Wiki * Pin Map Package Contents * 1x CO2L Unit with Temperature and Humidity Sensor (SCD41) * 1x Grove Cable https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2023-03-07 https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2023-12-27 https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2024-09-18 https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2024-11-29 https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2024-11-30 https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2025-04-29 https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2025-11-28 https://elecena.pl/product/22728224/m5stack-co2l-unit-with-temperature-and-humidity-sensor-scd41 2025-11-29