Yaham TRI series LED street lights are designed to provide optimized optical control for precise cutoff of backlight and uplight and uniform light distribution across the target area. These commercial grade, highly engineered LED luminaires feature outstanding performance in delivering whiter, brighter lighting that improves safety and visibility, while adding greater flexibility, style and scalability for area, site and street lighting applications. TRI utilizes advanced Nichia LED light engine technology with L70 lifetime over 100,000 hours without sacrificing application performance. Unique optics and photometrics design exploit the directional nature of LED light emission to get maximum spacing, target lumen, reduced offsite visibility and on-site glare. TRI incorporates a sleek and robust heatsink to ensure optimal heat transfer in +45°C ambient environments. LEDs are driven by a high-efficiency driver which is protected from short circuits, voltage overload and current overload. The driver's excellent cold temperature starting capability enables TRI LED street lights to operate in ambient temperatures as low as -40°C. The aluminum housing is coated with a thermoset super TGIC polyester powder coat finish for excellent resistance to corrosion, ultraviolet degradation and abrasion. The luminaire is completely sealed with an IP65 weatherproofing rating.