A convenient and easy-to-use LED luminaire capable of adjusting the illumination angle of a light source in a combined manner is provided. The luminaire includes a cover, an upper shell, a lens, a PCB, a battery holder, an iron sheet, a lower shell, a base shell, a magnet, a base cover plate, a detection module, and a control platform. Through the combination of multiple groups of lights and multiple groups of lenses at different angles, the illumination angle of the luminaire can be conveniently changed to concentrate light on a specific area. The control platform adopting a cloud platform remotely controls the luminaire. A brightness adjustment system adopts a brightness estimation model to automatically adjust the brightness of the luminaire. A voice conversion submodule adopts a language model to extract command voice of a user into instruction information.