USB Mini Humidifier Mist Driver Circuit Board Fogger Atomization Film Atomizer Sheet Diy Kits 5V USB ultrasonic sprayer driver board and atomizer board, Low driving voltage, low power consumption, low impedance, stable waveform, high conversion efficiency Ring atomizer plate, middle spray, 5um ultra-fine spray holes, 740 ultra-dense spray holes The surface of the atomized film adopts an anti-oxidation silver layer, which protects the coating process and has a long service life, Use environmentally friendly electronic components Strong versatility, large amount of fog, stable performance, the chip has automatic timing shutdown function.5V USB power supply mode, which can be powered by for Android mobile phone charging cable.<br><br>Voltage: DC5V Current: 300mA Power: 2W Frequency: 108KHz Driver board size: 35x19mm Diameter of atomized steel sheet: about 16mm Outer diameter of silicone ring: about 20mm Wire length: about 8cm The number of holes is 740, the hole diameter is 5um Material: PC+Metal colour: Green<br><br>Package Contents: 4 x circuit board 4 x Atomization film<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.