5 VOLT USB RECHARGEABLE FAR UVC LIGHTS use 4.7v battery power far-uvc 222-nm excimer KrCl light lamps/bulbs that are designed to operate at an applied input voltage of 4.7 volts.
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2W Far-UVC 222nm Far-UVC Light
QuantaPods Portable 2-watt Far-UVC Excimer Light Filtered Far-UVC 222nm Peak Wavelength
$299.99