ULTRABRIGHT PAR20 375-410nm UV DUO 36 LED SPOT LIGHT BULB All Purpose & weather proof* Designed to work with the features of holiday lighting controller from Light-O-Rama ( LOR ), DLight, Animated Lighting ( AL & HHIB ), FireFly, LightningFX and EFX-Tek. Also dimmable with Lutron digital dimmers. Designed for the best of both worlds. The lower band UV (ranges 375 - 395nm) is true UV blacklight that will glow most UV reactive pigments, including ClearNeon Paints, or reading security markings on money and identification. The bulb also includes MinionsWeb EXCLUSIVE Purple LEDs (405-410nm) that give you both purple color and higher band blacklight in one bulb. It is perfect for that great creepy look on props without blacklight reactive paints or webbing too. Plus the effective 400-420nm UV range for charging up almost every other black light effect. No one provides you with such a diverse bulb for your halloween, haunted house and dark ride needs. We bring you the highest quality UV bulbs available. Effective bandwidth is 375-410nm Uses less than .5 watt of power per lamp. The perfect energy saving solution to your haunting and holiday lighting needs. The return on your investment is almost immediate! They will last for 80,000 hours = 40 years at 40 hours a week. Think of the cost of replacing 4000 incandescent spotlight bulbs saved over that same time span! Spot diameter of illuminance at 3' is 2', at 15' it is under 10' wide. Very little heat is generated by this lamp, it is barely warm to the touch. The Fire Marshals will compliment your lighting solution. They can also safely topped with theatrical and photo gels to alter the color. Made with 18000mcd LEDs (slightly lower rating on Red and Yellow) Edison Medium Base (like a regular light bulb) , 110/220vAC, PAR20 envelope lamp Available in Red, Orange, Yellow, Green, Blue, Cool White 8000K, Warm White 4000K, Purple & UV380. *please review details: http://www.minionsweb.com/osStore/lighting-ac-led-bulbs-c-1_4_43.html http://www.minionsweb.com/osStore/led-bulb-faqs-i-14.html