Round LED surface-mounted panel ALR - modern general lighting The white, round LED ceiling light ALR is a surface-mounted LED panel made of white plastic for ceiling or wall mounting. Thanks to the mounting plate or visible screws, an elegant look is supported. The light is emitted at a very wide angle and provides suitable general lighting in hallways, corridors, reception areas, study rooms and offices. ALR has an LED ballast; this can be controlled with a trailing edge or trailing edge phase dimmer to regulate the light output.