3 ms·Out of interest what are your thoughts on the Aranet4? (other than it's quite high price of course).by smcleod 3y agoOut of interest what are your thoughts on the Aranet4? (other than it's quite high price of course).ahaucnx 3y agoAs far as I know the Aranet uses NDIR CO2 sensor modules from SenseAir. We do use the same brand in our DIY kits and they are very accurate and probably one of the best low-cost CO2 sensors.smcleod 3y agoCool, good to know. Thank you for taking the time to respond!