An attenuator is an optical device that will add a pre-determined loss between two connectors, which dampens the fiber optic signal. Attenuation is needed when a optic signal is too powerful. We stock a full line of SC and LC UPC attenuators in 2,3,4,5,7,10,12,15,20 and 25 DB ready for same day shipping. ST, FC and bulkhead attenuators are also available.