Blueprint BCC-1 Digital CO2 ControllerControl 120V regulator or generator. Day only operation. PPM: 400 2000. 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,