Click to expand Tap to zoom Titan Controls Atlas 3 - Day/Night CO2 Monitor/Controller by Titan Controls Sold out $467.71 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out Controls and monitors CO2 from 0 to 2000 parts per million (PPM). CO2 enrichment or CO2 exhaust features. Easy to set-up and operate. Enclosure resists dust, rust and moisture. 5 Amps maximum/120 Volts/60 Hz.