Features: 1Fine Spray Particles: The atomization plate adopts the design of intermediate spray 5um ultra fine spray aperture and 740 ultra dense spray aperture. Spray particles are fine and do not wet the desktop. 2High Efficiency: The humidifier atomization driver board has low driving voltage low power and low impedance but stable waveform and high conversion efficiency. 3Large Amount of Spray: This atomization module can spray a large number of spray particles with good humidification effect which is very practical. 4Long Service Life: The surface of the humidifier atomization disc is coated with anti oxidation silver layer which is durable and can be used for a long time. 5Easy to Use: The atomization plate is equipped with switch control and timed shutdown function. You can set the timed shutdown time according to your own needs. Specification: Item Type: Atomization plateMaterial: ABS silicone ceramicWeight: Approx. 13g/0.46ozCurrent: 300mAPower: 3WAperture: 5mNumber of Holes: 740Punching Area: 3mm/0.12in diameterDiameter of Steel Sheet: 16mm/0.63inOuter Diameter of Rubber Ring: 20mm/0.79inResonance Frequency: 108KHz (Constant frequency)Double Atomization Amount: 100ml/hSwitch Control: SupportTiming: 3-12 hours shutdown Package List: 2 xAtomizationPlate1 x Circuit Board2 x Humidifying Rod