ThinkGrow’s Model One LED System Drivers, the TLD-2 / TLD-4, are power supply devices designed for horticultural planting scenarios, specifically designed for the Model One LED light bars. Depending on the model, the drivers feature two spectrum or four spectrum control channels. TLD-2 / TLD-4 come with advanced features that can be unlocked by growers when the drivers are connected to a TrolMaster controller. With the ability for group spectrum control, and more, it is an ideal way to take your harvests to the next level and reap the rewards of this system.