TrolMaster’s Hydro-X system can control most of the horticultural lighting fixtures sold on the market today. "TrolMaster’s Hydro-x system can control most of the supplemental lighting fixtures sold today. Most light manufacturers provide the ability to control their lighting systems using what known as a low-volt control. That low-volt control can take many forms and communication protocols. TrolMaster makes several types of lighting adapters (LMA units) that allow the Hydro-x to control lights using their low-volt control option. This Lighting Control Adapter D (LMA-12) is specially designed for controlling D ballast."