{"product_id":"395nm-uv-led-penlight-invisible-ink-pet-stain-detector","title":"395nm UV LED Penlight – Invisible Ink \u0026 Pet Stain Detector","description":"\n\u003ch2\u003e395nm UV LED Penlight – Spot What the Naked Eye Can't See\u003c\/h2\u003e\n\u003cp\u003eThis compact 395nm ultraviolet penlight is your go-to tool for revealing hidden details in everyday life. Whether you're checking banknotes for authenticity, hunting for invisible ink markings, or locating pet stains on carpets and upholstery, this pocket-sized UV flashlight delivers powerful 395nm–365nm ultraviolet illumination with up to 200 lumens of output — all in a sleek, clip-equipped pen form factor.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e395nm–365nm UV Light Source:\u003c\/strong\u003e Highly effective for detecting fluorescent markings, invisible ink, and residue stains that are invisible under normal lighting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUp to 200 Lumens:\u003c\/strong\u003e Bright, dazzling UV output for confident, accurate detection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Focus:\u003c\/strong\u003e Convex lens reflector with stretch-to-focus adjustment — zoom in or widen the beam for different tasks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3 Light Modes:\u003c\/strong\u003e High – Low – Strobe, selectable with a single on\/off button.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Skid \u0026amp; Waterproof Design:\u003c\/strong\u003e Rugged construction stands up to outdoor use — camping, hiking, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClip-On Portability:\u003c\/strong\u003e Built-in pocket clip keeps your UV penlight ready at all times — attaches to shirts, pockets, or bags with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Maximises battery life across a range of battery charge levels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE, FCC \u0026amp; RoHS Certified:\u003c\/strong\u003e Meets international safety and compliance standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can You Use It For?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e💵 \u003cstrong\u003eBanknote \u0026amp; Document Verification:\u003c\/strong\u003e Instantly reveal security markings on currency, IDs, and passports.\u003c\/li\u003e\n  \u003cli\u003e🐾 \u003cstrong\u003ePet Stain Detection:\u003c\/strong\u003e Locate dried pet urine and other organic residue on floors and furniture.\u003c\/li\u003e\n  \u003cli\u003e✍️ \u003cstrong\u003eInvisible Ink:\u003c\/strong\u003e Perfect for escape rooms, kids' activities, and secure note-writing.\u003c\/li\u003e\n  \u003cli\u003e🏕️ \u003cstrong\u003eOutdoor Use:\u003c\/strong\u003e Hunting, climbing, camping, and night activities.\u003c\/li\u003e\n  \u003cli\u003e🔍 \u003cstrong\u003eLeak Detection \u0026amp; Inspection:\u003c\/strong\u003e Identify fluorescent dye traces used in HVAC and plumbing leak-check kits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Wavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e395nm – 365nm UV\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 200 Lumens\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh \/ Low \/ Strobe\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 × AA Batteries (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReflector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConvex Lens (adjustable focus)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, FCC, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Safety Note:\u003c\/strong\u003e Never aim directly at eyes. Remove batteries during extended storage periods.\u003c\/p\u003e\n\n\u003ch3\u003eExplore More From Our Store\u003c\/h3\u003e\n\u003cp\u003eLooking for more useful inspection and outdoor tools? Check out these popular picks:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-100mm-tiny-digital-vernier-caliper-portable-measuring-tool\"\u003e0–100mm Tiny Digital Vernier Caliper | Portable Measuring Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2m-carbon-fiber-invisible-selfie-stick-monopod-dji-insta360-gopro\"\u003e1.2M Carbon Fiber Invisible Selfie Stick for DJI \u0026amp; Insta360\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExternal Resource\u003c\/h3\u003e\n\u003cp\u003eFor guidance on UV safety and proper usage of ultraviolet light equipment, refer to the CDC – UV Radiation Safety Guidelines.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What wavelength does this UV flashlight emit, and what is it best at detecting?\u003c\/h4\u003e\n\u003cp\u003eA: This UV penlight operates at 395nm–365nm ultraviolet wavelength, making it highly effective at revealing fluorescent markings on banknotes, detecting invisible ink, locating pet stains on carpets and upholstery, and identifying fluorescent dye traces used in leak detection.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this UV flashlight come with batteries?\u003c\/h4\u003e\n\u003cp\u003eA: No, batteries are not included. The penlight requires 2 × AA batteries, which are widely available. The wide voltage compatibility design ensures maximum battery life regardless of charge level.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I adjust the focus on this UV penlight?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The convex lens reflector allows you to adjust the focus by stretching the head of the flashlight, letting you shift between a concentrated spot beam and a wider flood beam depending on your task.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this UV penlight safe to use indoors and outdoors?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The anti-skid, waterproof design makes it suitable for both indoor tasks like document verification and outdoor activities such as camping, hunting, and climbing. Always avoid directing the UV beam at eyes.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What wavelength does this UV flashlight emit, and what is it best at detecting?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This UV penlight operates at 395nm–365nm ultraviolet wavelength, making it highly effective at revealing fluorescent markings on banknotes, detecting invisible ink, locating pet stains on carpets and upholstery, and identifying fluorescent dye traces used in leak detection.\"}}, {\"@type\": \"Question\", \"name\": \"Does this UV flashlight come with batteries?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, batteries are not included. The penlight requires 2 × AA batteries, which are widely available. 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