This fraud detection and signature verification UV lamp use longwave ultraviolet light to check the authenticity of signatures, documents, tickets, passports, credit cards and currency. It offers a cost effective solution to security problems as the ultraviolet detects invisible markings and alterations made to documents. The lamp is easy to operate. Simply pass the item in question under the longwave ultraviolet. Invisible inks or altered documents fluoresce when exposed to the UV. Compact size for desktop use. Speed up customer service and save time. Instant document verification. Easily detect forged documents, currency and signatures. Easy to operate - pass the document under the UV. Safe to use. SL-2M Model. 4.5 H x 6.5 W x 5.75in D. 365nm Black Light Blue Longwave UV Source. 8 ft. Cord Length. 115V. 4w. UVP® #: 95-0164-01.