Control D Mesh Nebulizer is designed with ultrasonic Vibrating Mesh Technology (VMT). With this technology a mesh/membrane with 1000–7000 drilled holes vibrates at the top of the liquid reservoir, and thereby pressures out a mist of very fine droplets through the holes. This technology can increase efficiency and shorten working hours. Noiseless operation, practically noiseless operation, noise level of only 25 dB, ideal for babies and children.