Surface-mounted ceiling light. Large-area illumination for ceiling mounting. Works with Amazon Alexa, Apple Home Kit, Google Assistant and Samsung SmartThings. Luminaire with permanently installed LED light source. 2700 to 6500 Kelvin - warm white to cool white light. 50 watts, 4000 lumens. Can be controlled via Bluetooth and WLAN. The many advantages of LED lighting. Thanks to an in-built LED, this light is extremely energy-efficient in operation. LEDs (light-emitting diodes) have the advantage over conventional light sources that they do not generate heat, but convert most of the energy into light and therefore only consume a fraction of the electricity. Because LEDs are flicker-free and have a high colour rendering index, their light is always pleasant for your eyes. Objects that you highlight with LED lighting appear in their true, natural colours. LEDs are also extremely robust and durable, so the light requires hardly any maintenance despite its long service life.