Overview
The 5V Ultrasonic Humidifier Module is a compact “plug-and-play” solution for generating fine water mist. Unlike industrial foggers, this module runs safely on 5V DC, making it compatible with power banks, laptop USB ports, or phone chargers. It consists of a driver circuit board and a microporous ceramic atomizing transducer. When powered, the ceramic disc vibrates at 108,000 times per second ($108KHz$), blasting water through 740+ micron-sized holes to create an instant cloud of fog.
Key Features
Instant Mist: High-frequency ultrasonic vibration produces fog the second you power it on.
Low Power Consumption: Only draws about 2W, making it ideal for battery-powered or solar IoT projects.
Micron-Level Spray: Produces ultra-fine 5μm particles that stay in the air longer and don’t “wet” the surrounding surfaces easily.
Modern Interface: Available in Micro-USB or Type-C variants for easy connection.
Safe for Plants: Excellent for DIY humidification in greenhouses, mushroom grow boxes, or reptile enclosures.
Technical Specifications
| Feature | Specification |
| Operating Voltage | DC 4.5V ~ 5.0V |
| Operating Power | 1.5W – 2.0W |
| Resonant Frequency | 108KHz (±3KHz) |
| Atomizer Disc Diameter | 16mm (20mm with rubber ring) |
| Mist Output | ~50ml / hour |
| Mist Particle Size | 5μm – 6μm |
| Module Dimensions | 35mm x 19mm |
Setup Tip
For the best results, the ceramic disc should be placed against a cotton wick (foam stick) that draws water up to it, or it should float just on the surface of the water with the silver side facing up. Do not submerge the driver board
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