General Catalogue Legend 544 Legend new number and type of lamps LED lamps diameter ceiling lamps l length track lamps w width chandeliers, pendants h height wall lights x\x min and max size desk lamp d shade / shade diameter floor lamps type of fixing lampshade - cartridge type of lampshade attachment - clothespin switch on the wire switch on base mount 2 in 1 moisture protection staining possible dimmer International The first number is the degree of protection The second number Protection against the penetration of solid particles is moisture protection Marking 0 no protection 0 no protection 1 protection against the effects of third-party 1 protection against condensation objects with a diameter of more than 50 mm 2 protection against water drops 2 protection against the effects of third-party 3 protection against rain drops objects with a diameter of more than 12 mm 4 protection against splashing water 3 protection against the effects of third-party 5 protection against water jets objects with a diameter of more than 2.5 mm 6 protection against water 4 protection against the effects of third-party 7 protection against water penetration when objects with a diameter of 1 mm or more immersed to a depth of 1 meter 5 full protection against contact, part of the 8 protection against water penetration during dust can get into the device (does not affect prolonged immersion the functionality) 6 full protection against contact, dust cannot get into the device Colorful 2700K Warm light, like an incandescent lamp temperature or sunrise / sunset 3000K Warm white light 4000K Neutral white light, reminiscent of the sun at lunchtime