AEMC CA 1510 Indoor Air Quality Data Logger Indoor Air Quality Data Logger, Monitor & display CO2, Temp, and Humidity. $ 575.00; TandD RTR-507-S Temp Range: -25°C to 70°C, Humidity Range: 0 to 99% RH, Wireless Interface. TandD RTR-576-S High Accuracy, 3 Channels: Temp, Humidity, CO2, with Wireless Interface. $ 717.00; TandD …