... LED.4,Stable and durable.Long lifespan,5,We use LCD backlight technology and high efficient led chip ... be performed by trained professionals only.2,Before starting use of the light, please check if the light was ... any damage shown, please DO not install or use it. 3,Try to avoid looking directly in the ... has been disconnected from the power supply.2,Use a dry or slightly moistened cloth for cleaning. ...