The CAP MLC-24DX Master Lighting Controller is a black light controller designed to control up to 24 grow lights, specifically compatible with CFL/HID grow lights. With a sleek and compact design, measuring 5 inches in height, 18 inches in length, and 15.5 inches in width, this controller is suitable for use with grow lights in a hydroponics setting. Weighing 23 pounds, this model from CAP is a reliable and efficient accessory for managing and optimizing the lighting conditions for your indoor plants.