Specifying an optional transfer switch that automatically activates the auxiliary driver when necessary eliminates nuisance switching from power fluctuations and adds 20,000 hours to the LEDgend's standard 80,000 hours of operation at 104° F ambient temperature. Available in three optical distributions: Type I (narrow asymmetric), Type II (medium asymmetric), and Type III (wide asymmetric). The modular design accommodates fixture upgrades. Surge protection includes drivers, photo controls, and relays as well as the LED itself. It's compatible with Acuity Brands' ROAM (remote operations asset management) technology for systemwide monitoring, control, and dimming.