... :1.7MHz; Useage:Ultrasonic atomizer; Ultrasonic Ceramic TransducerDiameter:16mm;Frequency:1.7MHz;Useage:Ultrasonic ... as buzzer(Piezo electric, electromagnetic, mechanical), piezoelectric ceramic element, SMD magnetic transducers, condenser microphones, ultrasonic ... in household appliances equipment, watches, toys, alarm systems, reversing radar, ultrasonic cleaning, ultrasonic atomization, marine ...