The ATNSFCPCXXA1SLPFO from POFC CORP. is a Fiber Optic Attenuator with Attenuation 1 to 30 dB, Return Loss >50 to 60 dB, Attenuation Tolerance ±0.8 dB, ±1.3 dB, ±1.8 dB, Operating Wavelength 1310 nm, 1490 nm, 1550 nm. More details for ATNSFCPCXXA1SLPFO can be seen below.