The M9 lighthead from Whelen delivers powerful warning and scene illumination tailored for fire trucks, ambulances, and commercial vehicles. The largest model in our M Series™, the M9 uses Linear Super-LED® optic technology to deliver bright, consistent illumination, making it ideal for critical operations. Available in SOLO™, DUO™, V-Series™, and Scene Light models, the M9 features Dynamic Variable Intensity™ (DVI™) light patterns, which gradually increase or decrease intensity, adjusting brightness levels during nighttime operations to enhance safety. The M9 also includes our patented E Block™ technology, which provides a barrier to prevent air and moisture from entering the lighthead. Its polycarbonate lenses use our innovative hard-coating process to resist sand, sun, salt, and road chemicals, ensuring long-lasting performance in any environment. Its larger footprint makes it suitable for primary warning or additional scene lighting on fire apparatus, rescue vehicles, and DOT fleets.