The LC/UPC Attenuator for Single Mode Fiber Optics - Beyondtech from Beyondtech is a Fiber Optic Attenuator with Attenuation 1 to 25 dB, Return Loss >50 dB, Attenuation Tolerance ± 0.5 dB, ± 1 dB, Operating Wavelength 1260 to 1650 nm. More details for LC/UPC Attenuator for Single Mode Fiber Optics - Beyondtech can be seen below.