Circuit Board Atomizer: 5V USB mist maker driver board and atomization plate kit for creating ultrafine 5um water mist with 740 density spray holes, delivering efficient humidification performance. Atomizer Board Module: Round ring steel sheet with oxidationresistant silver coating and silicone seal for ring, providing lasting durability and stable 110KHz frequency operation. Purifier Circuit Board: Compact 46*20*17mm driver module with low power consumption of 2W and 300mA current draw, ideal for smallspace humidity control solutions. Humidifier Driver Board: Features a middlespray design with a 16mm steel disc and a 20mm silicone outer ring for secure fitment and reliable atomization results. Use scenarios Smallspace installations: Integrate into desk, cabinet, or compact humidification solutions powered by 5V USB with a low overall power draw, suitable for spaceconstrained environments. Enclosures and enclosuresbased equipment: Durable ring components and stable 110KHz operation support consistent misting in electronics housings, test chambers, or lab enclosures that require reliable humidity control. Prototyping and DIY devices: The combination of 5um mist capability, compact dimensions, and low power consumption makes it suitable for DIY diffusers, portable humidifiers, or prototype misting modules for educational projects.