Dialight 657 Series Watertight LED Panel Mount Indicators (PMIs) are IP67 / NEMA 4X certified, making them ideal for use in hazardous or outdoor environments. The 657 Series PMIs are available with domed, flat or right-angle lens options. These LEDs provide cool-to-the touch operation and are resistance to shock and vibration. The 657 Series LED PMIs are daylight viewable and feature LED technology engineered for up to 100k hours of operation. The Dialight 657 Series is available with non-tinted lenses to eliminate phantom effect.