Multipurpose Detection Fluorescent Agent Detection Document Authentication Detection of Pet Urine Catching Outdoor Insects Some tips for you to use our UV flashlight: Please make sure the battery compartment is installed correctly. If the torch does not work, please try to change the installation direction of the battery compartment. Do not shine UV lights into peoples eyes directly. The ultraviolet led black light works perfect in dark environment, the darker it is, the better it works. This black light torch does not work on reflective surface or carpet with fluoresce. Please keep it away from children.
eBay