1. Wide application 2. Electronic DIY, can be made by yourself 3. Household atomizer/humidifier 4. Simple wiring, easy to understand 5. High performance<br><br>Product description: 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/timing work Product application: Smart home, home automation Household atomizer/humidifier Electronic DIY Small USB device Select different function modes by welding M2, M1, M0 ports Colour:As Shown Material:Plastic<br><br>Package Contents: 1 x TYPE-C atomizer/humidifier controller 1 x atomizer sheet 1 x humidifier cotton swab<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.