Blueprint BAC-2 Environmental Controller w/ Fuzzy LogicControl four 120V devices. Separate day & night settings. Max min. Battery backup. Remote sensor w 15 cable. Fuzzy Logic. 3 year warranty. The Blueprint Controllers line offers precise control over environmental condition in your greenhouse or indoor garden. Achieve bigger, healthier yields by automating lights, temperature, humidity, and CO2 levels using HID hubs and digital or analog atmosphere controllers. Simplify CO2 supplementation with CO2