The B 500 works according to the evaporation principle. Limescale and condensate formation cannot occur, a potential overhumidifying of the air is also ruled out. The electronically controllable humidifier operates almost noiseless. Its very silent radial fan can be adjusted in four manual power stages or fully automatically. An integrated calibratable hygrostat controls the desired humidity. The infrared remote control enables safe humidification operation: It is impossible for unauthorized persons to change settings of the device!