Super-flat recessed downlight. Housing made of die-cast aluminum. Light guide and diffuser made of non-yellowing PMMA, opal matt. Tunable White dynamically adjustable from 2700 K to 6500 K. With Casambi smart+free Bluetooth® control for wireless networking and operation using an Android / iOS device, free app available for download. Ceiling mounting with spring system. Installation depth depends on ceiling thickness. Suitable for direct covering with thermal insulation material. Suitable for through-wiring with separately available accessories. Surface-mounted housing as an accessory for all sizes. Retrofittable decorative cylinders made of chintz fabric as an accessory, optionally with satin plastic cover plate. Through-wiring box (5-pin) available as an accessory.