GE Lighting 26423 Lucalox High Pressure Sodium B17 HID Light Bulb 100W, ClearGE Lucalox High Pressure Sodium HID Outdoor Light Bulb is ideal for Motion Sensing and Security. HID (High Intensity Discharge) lamps provide high efficacy and low operating cost. The HID is generally the most efficient light source. Better efficiency almost always means lower operating cost. They also have a long life. Most HID lamps have life ratings that are better than incandescent lamps and similar to fluorescent lamps. An HID lamp produces high