Titan Controls Atlas 2 - Preset CO2 Monitor/Controller
Channel: Hawthorne
Date: 2015-01-29

http://www.sunlightsupply.com/shop/bycategory/environmental-controllers/titan-controls-atlas-2-preset-co2-monitor-controller

Preset CO2 control at 1500 PPM. Built-in self calibration feature. Easiest to use CO2 Controller on the market. Simply plug in your CO2 generator or regulator and you are ready to go. Built-in photocell allows CO2 enrichment only during daylight hours. Durable powder-coated steel housing. 15 Amps maximum/120 Volts/60 Hz. Patent No. D657,748.

http://www.titancontrols.net/products/co2-devices/atlas-2.aspx