This LC Fiber Optic LC/UPC-5DB Attenuator is perfect for networking needs. With a single mode wavelength parameter ranging from 1310 to 1550 NM, accurate attenuation of less than 0.5db, and a product loss of over 55dB, it ensures high-quality connectivity. The connector A is an optical LC, and connector B is an LC. The core insertion type is ceramics, and it comes with a portable bag for convenience.This Attenuator is ideal for use in Splitters, Couplers & Adapters, Networking Cables & Adapters, Computer Cables & Connectors, and Computers/Tablets & Networking. It is blue in color, has no custom bundle, and has a storage temperature of 55 C~85 C. Environmental humidity is 95RH, and working temperature ranges from 40 ~ 80 C. This product comes with test and geometry measurements.