The ATN-732-15-1 FC/UPC 15dB Fiber Optic Attenuator Singlemode 1310/1550nm is a set of five silver units designed to reduce the signal strength in singlemode fiber optic cables. These attenuators feature a 15dB attenuation level, making them ideal for controlling the amount of light that passes through the network cable. With FC connectors on both ends, these units provide a reliable and secure connection to ensure optimal performance. Perfect for use in networking applications, these attenuators help to improve the overall signal quality and prevent issues with signal strength in fiber optic systems.