Features Spray Level: The atomizer driver can cover the water appearance, absorbent sponge or towel well, with finer particles and higher spray level. Distinguish Front and Back Functions: The piezoelectric ceramic ring and pad on the front of the atomizer driver, the atomizer cannot be placed in the water; the back provides Micro USB power supply, and continues to work after power on. Performance Improvement: The atomizer driver helps to improve the spray quality, helps to improve the performance of the humidifier and prolong the service life. Easy to Use: Easy to use atomizer driver, only need to sweep the frequency drive board to charge, and then press the button to start it. Wide Application: This is a humidifier DIY kit that is widely used in ultrasonic atomizers, USB humidifiers, perfume atomizers, aromatherapy atomizers and other atomization equipment. Specification: Item Type: Humidifier Module Working Voltage: DC 3.7-5.5V (5V Recommended) Working Current: 330mA Standing Current: 21uA Power Supply Interface: Type C USB Humidifier Interface: pH2.0 Terminal Frequency: 108kHz Multiple Function Modes: Uninterrupted Work Intermittent Work Timed Work Package List:1 x TYPE C Atomizer or Humidifier Controller1 x Atomizing Film1 x Humidifier Cotton Swab Package List 1 x TYPE C Atomizer or Humidifier Controller 1 x Atomizing Film 1 x Humidifier Cotton Swab