Caleo-X1 elongated LED ceiling light made of extruded aluminium profile with no welding seams The Caleo-X1 effective LED ceiling light is best-suited to bathing an office space in bright light. The aluminium body features a fantastic surface coated with silver textured paint. The diffuser allows for a direct emission of light downwards, and an indirect emission of light upwards, and is made using the finest special acrylic (micro-structured). The brightness can be regulated thanks to the 1-10 V EB. However, a 1-10 V dimmer is required for this, which is sold separately. For the regulation of the light, a practical two-core control cable and a three-core electrical cable are also required. Energy efficiency class:A+