... Atomizer for Humidifier 1. Type:Glass-glazed; 2. Diameter:25mm; 3. Frequency:2.4MHz; 2.4MHz Ultrasonic Atomizer for Humidifier1. Type:Glass-glazed ... electric, electromagnetic, mechanical), piezoelectric ceramic element, SMD magnetic transducers, condenser microphones, ultrasonic sensor,Atomization piece, speakers and other audio components. And ...