Actinic BL TL(-K)/TL-D(-K) – optimized for Electronic Fly Killers Perfectly matches the eye sensitivity of houseflies and in this way attracts more insects;Safe for use;Good environmental choice;Design freedom With an optimized spectrum matching the eye sensitivity of the housefly, Actinic BL TL(-K)/TL-D(-K)/TL-E/PL-S and PL-L lamps are perfect for attracting insects. They have virtually no UV-B output, and so are perfectly safe. What's more, with the lowest mercury content in the industry and being 100% lead-free, these lamps represent a very good environmental choice. Furthermore, the availability of a wide range of form factors (straight (T5, T8, T12), circular (TL-E) and compact (PL-S/PL-L)) and wattages enables you to make all kinds of designs for your electronic fly killers Emits long-wave UV-A radiation in the 350-400nm range;UV-B/UV-A ratio less than 0.1 % (UV-B 280-315nm);100% lead-free;Low mercury content;Wide power range Insect traps, Electronic Fly Killers (EFKs)