Cannot be use if it is plug-in. So if the rechargeable battery die, this thing become useless.
And is there any independent study that show the effectiveness of this model?
In the Amazon review, someone metered the UVC LEDs using a UVC LED meter. Note that there are various meters/probes for the different wavelength of UVC. The UVC bulbs and LEDs are at different wavelength so one will need different probes/meters to get a more accurate reading on the irradiance of the UVC.
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And is there any independent study that show the effectiveness of this model?
And is there any independent study that show the effectiveness of this model?