Outdoor lights face extreme weather; therefore, you should check the housing material, prioritizing die-cast aluminum with anti-corrosion powder coating over plastic. Inquire about the IK Rating (Impact Protection), where IK08 or higher is ideal for public spaces to prevent vandalism. For the internal components, ensure the use of high-quality LED drivers (e.g., MeanWell, Inventronics, or Sosen) and branded LED chips (e.g., Cree, Osram, or Lumileds), as these determine the L70 lifespan (typically >50,000 hours).