OCESTORE D20mm 113KHz Ultrasonic Mist Maker Module: Is This DIY Humidifier Kit Worth It in 2026?
A DIY ultrasonic atomizer module for electronics projects, not a ready-to-use humidifier. Only buy this if you plan to build your own misting device.
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Best For
How this humidifier scores for different use cases
The low-voltage DC operation (3.7-12V) and tiny size make it theoretically usable in a DIY desktop project, but it requires building an enclosure and water reservoir.
The ultra-light 1.28 oz weight and small dimensions are portable, but this is not a functional humidifier. You must build a complete device around it.
This is a bare DIY atomizer module, not a ready-to-use humidifier. It has no tank, no auto shut-off, no quiet mode, and no runtime capability on its own.
Completely unsuitable for nursery use. No safety features, no BPA-free certification, no enclosed design, and requires electronic assembly that poses hazards around children.
A 20mm atomizer disc produces minimal mist output. It cannot humidify any meaningful room area and has no tank or continuous operation capability.
No WiFi, no app, no voice control, no smart features of any kind. This is a raw electronic component with no connectivity.
Our Verdict
This is not a humidifier. It is a raw ultrasonic atomizer module for DIY electronics projects.
You get two 20mm atomizer discs with PCB driver boards. You must supply your own water container, power source, and enclosure.
The 3.7V-12V operating range lets you power it from a small battery or USB. The 113KHz frequency produces fine mist particles.
Builders and makers will find this useful for custom projects. You can add it to perfume diffusers, small humidifiers, or aromatherapy devices.
This product fits hobbyists who want to build their own misting device from scratch. If you want a ready-to-use humidifier, look elsewhere.
At $19.99 for two modules, the price is reasonable for electronic components. You will spend more on the enclosure and reservoir you need to build around it.
What We Like
- Runs on 3.7V to 12V DC power, so you can use batteries or USB sources
- Weighs only 1.28 ounces, making it one of the lightest atomizer modules available
- Comes as a 2-pack, giving you a spare or parts for two projects
- 113KHz ultrasonic frequency creates very fine mist particles
- Works with water surface, absorbent sponge, or towel for flexible DIY setups
What Could Be Better
- No water tank included. You must build your own reservoir
- No auto shut-off feature to prevent dry running or overheating
- No variable mist control or adjustable output settings
- Requires soldering or wiring knowledge to assemble into a working device
- No sleep mode, timer, or any automated operation features
Standout Features
Frequently Asked Questions
Common questions aboutOCESTORE 2 Pack DC 3.7V-12V D20mm 113KHz Ultrasonic Mist Maker Atomization Maker Module DIY Humidifier with PCB module
Is this a complete humidifier ready to use out of the box?
No. This is an ultrasonic atomizer module with a PCB driver board. You need to build your own water container, power supply, and housing around it.
What power source does this atomizer module need?
It runs on DC 3.7V to 12V. You can use a lithium battery, USB power adapter, or any DC source in that voltage range.
How much mist does the 20mm atomizer disc produce?
The listing does not specify exact mist output in mL/h. A 20mm disc at 113KHz typically produces a small amount of fine mist, suitable for tiny DIY projects.
Can I use this module to build a humidifier for essential oils?
The manufacturer lists essential oil atomizers as a compatible use. However, oils may damage the ceramic disc over time and shorten its lifespan.
Does this module work without being submerged in water?
Yes. The listing states it works over the water surface, with an absorbent sponge, or with a towel. It does not need full submersion.
Best For
How this humidifier scores for different use cases
The low-voltage DC operation (3.7-12V) and tiny size make it theoretically usable in a DIY desktop project, but it requires building an enclosure and water reservoir.
The ultra-light 1.28 oz weight and small dimensions are portable, but this is not a functional humidifier. You must build a complete device around it.
This is a bare DIY atomizer module, not a ready-to-use humidifier. It has no tank, no auto shut-off, no quiet mode, and no runtime capability on its own.
Completely unsuitable for nursery use. No safety features, no BPA-free certification, no enclosed design, and requires electronic assembly that poses hazards around children.
A 20mm atomizer disc produces minimal mist output. It cannot humidify any meaningful room area and has no tank or continuous operation capability.
No WiFi, no app, no voice control, no smart features of any kind. This is a raw electronic component with no connectivity.
Scores
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