Choice of 12 high efficiency, patent pending AccuLED Optics™, Offered standard in 4000K (+/- 275K) CCT and nominal 70 CRI, Suitable for operation in -40°C to 40°C ambient environments, 120-277V 50/60Hz, 347V 60Hz or 480V 60Hz operation, Proprietary circuit module withstands 10kV of transient line surge, Pole, mast arm or wall-mounted configurations, Construction allows for passive cooling and natural cleaning, Cast-in leveling guides provide +/-5° vertical leveling adjustment, Features a 5-year warranty