Feature: 1. Fine 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. 2. High Efficiency: The humidifier atomization driver board has low driving voltage, low power and low impedance, but stable waveform and high conversion efficiency. 3. Large Amount of Spray: This atomization module can spray a large number of spray particles, with good humidification effect, which is very practical. 4. Long 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. 5. Easy 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 plate Material: ABS, silicone, ceramic Weight: Approx. 13g/0.46oz Voltage: 5V Current: 300mA Power: 3W Aperture: 5μm Number of Holes: 740 Punching Area: 3mm/0.12in diameter Diameter of Steel Sheet: 16mm/0.63in Outer Diameter of Rubber Ring: 20mm/0.79in Resonance Frequency: 108KHz (Constant frequency) Double Atomization Amount: 100ml/h Switch Control: Support Timing: 3-12 hours shutdown. Package List: 2 x Atomization Plate1 x Circuit Board2 x Humidifying Rod