... also can be used for carbon dioxide CO2, temperature and humidity controller5. Full range of linear output and PID Adjustable ... dry contact outputs (programmable corresponding carbon dioxide CO2, temperature or humidity)7. Carbon dioxide concentration adjustment range: 0 ~ 20,000 ... or 0 ~ 50,000 ppm; Temperature: 5 ~ 45 °C; humidity: 5 ~ 95% RH8.ABC Logic Self Calibration patented technology. For ...