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 a silver layer, which protects the coating process and has a long service life, uses 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 an Android mobile phone charging cable 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 Number of holes: 740, hole diameter: 5um Material: PC+Metal Color: Green Package Contents: 4 x Circuit board 4 x Atomization film 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm