Features:1. 3 step dimmable for 70W, 50W, 35W metal hanlide reptile uvb lamp2. The ballast is an electronic ballast, suitable for terrarium lamps , which can work with most of HID ( High Intensity Discharge) metal halide bulbs3. Waterproof connnector for use widelySpecifications:Type: 35/50/70W Dimm..