USB powered humidifiers
prices on 4 models— USB power provides greater mobility: you can power the humidifier not only from a stationary power source such as a computer or a USB network adapter, but also from a laptop, tablet, or even a power bank pocket battery. Car USB adapters are also available. The downside is that the power of such a power supply is extremely low, and it is suitable only for the most compact humidifiers with limited performance specifications.
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