Blueprint Controllers BCR-2 Dual Tank CO2 RegulatorControl 120V device. Separate day & night settings. Max min. Deadband. Remote sensor w 15 cable. 10A Max. 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 generators,