- With the compact UV LED flashlight you have an effective ultraviolet detector in all situations. They detect invisible dirt and can remove liquids, dirt and stains from affected areas. Especially useful for incontinent pets and territorial markings for dogs, cats and rodents. The affected areas light up brightly in the light beam. Please never look directly at the UV light 2: The black light lamp is more effective in the dark. Stains and dirt are then particularly clearly visible. 3. The only 10 cm long UV flashlight is ideal for on the go. In an unfamiliar environment, for example in a hotel, you can discover hygiene defects and protect yourself from germs. 4. Ideal for currency identification and for verifying the authenticity of driver’s licenses, ID cards and passports. 5. Collectors use the UV lamp to track minerals (eg amber) that glow in different ways. The application possibilities are almost unlimited.