Temperature control (Day & Night) from 55¿ F to 95¿ F. Humidity control (Day & Night) from 20% to 80%. Built-in CO2 sensor and CO2 calibration features. Auxiliary heating and cooling options. Enclosure protects internal components from dust, rust and moisture. ETL listed for use in commercial application. 12 Amps maximum/120 V/ 60 Hz.