ILUMINAR Lighting has created the first controller on the market to run LED lights, CMH, HPS, MH, as well as T5 fixtures 0-10, 1-10 or even 0-11.5V The HASH Controller allows you to record and view in realtime the VPD, temperature, CO2, PAR, humidity and more throughout the growth cycle. Retrieve that information at the touch of a button from your smartphone or device. (Sensors sold separately)