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The BMN31K502 is a water atomization module that provides a maximum power of 2W. Compared to our other water atomization modules, the BMN31K502 has a smaller size, and it is suitable for water atomization products that only require basic functions.
| Select | Quantity | Discount | Unit price |
| 1-9 | - | US$5.20 | |
| 10+ | 5% | US$4.94 |
How to generate mist?
The BMN31K502 is a microporous atomization module that generates oscillations at a frequency of 108KHz using a piezoelectric ceramic ring on the piezoelectric transducer to create ripples on the water surface. And then water molecules get into the micro-holes on the metallic film of the piezoelectric transducer. Due to the small diameter of these micro-holes, tiny water droplets are expelled from the opposite side of the metallic film, forming a mist.
To configure atomizing levels and atomizing period
The BMN31K502 provides two operation modes, stand-alone and networking.
In stand-alone mode, it is easy to control the atomizing power on/off by pressing the on-board button. Besides the power on/off controlling, networking mode can configure further parameters like atomizing levels and atomizing period through UART interface.
To use with a development board
There is a BMCOM on the product to directly connect to BMduino development boards, such as BM53A367A. You can use it with other development boards, such as Arduino UNO, as well.
| Pin | Pin name | Function |
|---|---|---|
| 1 | GND | Ground |
| 2 | 5V | Power supply: 5V |
| 3 | GND | Ground |
| 4 | VDD | Positive power (3.3V~5V) |
| 5 | TX | UART: TX |
| 6 | RX | UART: RX |
| 7 | NC | - |
| 8 | Y- | Piezoelectric transducer negative |
| 9 | Y+ | Piezoelectric transducer positive |
| Function | BMN31K522 | BMN31K512 | BMN31K502 |
|---|---|---|---|
| Operating voltage | 24V | 18V~26.5V | 5V |
| Operating current | 0.75A @24V | 0.42A @24V | 400mA @5V |
| Atomization power (Max.) | 16W | 10W | 2W |
| Atomization frequency | 1.7MHz | 1.7MHz / 2.4MHz | 108kHz |
| Adjustable atomizing level | O
3 levels |
O
Networking mode: 32 levels Stand-alone mode: 5W~10W |
O
Networking mode: 3 levels |
| Water shortage detection | O | O (can configure disabled) | X |
| Piezoelectric transducer
installation |
Under water | Under water | Above water |
| Interface | UART (9600bps) | UART (9600bps) | UART (9600bps) |
| HS Code (reference) | 8479.90.90.00-8 |
|---|
