Incandescent lamps represent the original lighting technology, remaining virtually unchanged since their invention in the mid-19^th century, and the lighting technology Satco® was founded upon. This is the technology most everyone has become familiar with and the baseline comparison for all other lighting technologies. Type "S" incandescent lamps are often used in sign marquees or used as indicator lamps.

• Features a coiled tungsten filament
• Select models are rated at 130V which, when used on a 120V line, life is extended approximately 2.5 times and lumens are reduced approximately 20%