CO2 Humidity and Temperature Sensor - SCD41 (Qwiic) photoacoustic Measurement System Combines Narrow-Band IR Light and a Microphone, Board.

The Spark Fun CO2 Humidity and Temperature Sensor - SCD41 (Qwiic) features the SCD40 CO2 from Sensirion.; The SCD41 uses Sensirion's PASens photoacoustic measurement system that combines narrow-band IR light and a microphone inside the sensing package capable of detecting concentrations from 0 to 40000 ppm with high accuracy over 400-5000 ppm ±(40 ppm+5%).; Features: I2C Interface (Qwiic-enabled) I2C Address: 0x62, 2x Qwiic Connectors, Supply Voltage Range: 2.4-5.5V (3.3V Typ.) Low Current Consumption: Normal Mode: Max: 205m A@3.3V, Typ: 18m A@3.3V.; All this functionality comes in our standard 1in. x 1in. Qwiic form factor and will seamlessly integrate into your Qwiic-based projects. However, we still routed the I2C signals out to a set of 0.1in.-spaced pins for users who prefer a soldered connection.; The SCD41 includes an automatic self-calibration routine to automatically adjust to its sensing environment over a seven-day calibration period. For best results, Sensirion recommends taking continuous readings for at least one hour a day of 'fresh air' for the calibration period to complete.