Dusk to Dawn: This dusk to dawn led area light with the more sensitive and accurate photocell automatically turns on at night and stays off at daytime, reduce wastage caused by voltage instability. And the 40W LED barn light replaces 400W incandescent, save $1980 on energy bill | IP65 Waterproof: Designed to withstand the harshest weather conditions, our barn light features an IP65 waterproof rating, meaning it is impervious to rain, snow, and dust. This makes it the ideal lighting solution for any outdoor space, providing reliable and consistent illumination regardless of the weather | More Durable: Aluminum cooling fins enable stronger heat dissipation, and keeps the dusk to dawn security light maintain a more long-term and stable performance. The dark gray aluminum back housing is corrosion & rust resistant and won't fade even for decades, granting this barn light a long-lasting 50,000hrs lifespan | 110-277V: With AC110-277V input, which makes this led barn light suitable for residential and commercial application, such as backyard, barns, farms, parking lots, garages and alleyways, etc | ETL & FCC Listed: Backed by both ETL and FCC certifications, our barn light meets rigorous safety and quality standards, ensuring dependable performance and durability. These certifications reflect its compliance with essential electrical safety guidelines and electromagnetic compatibility. Ideal for residential or commercial use