Product Highlights - Provides loss to a fiber cable if the dB power is too great. - Ideal for use when equipment is too close to each other. - Guaranteed for life! Attenuation — ≤0.5 dB Attenuation Tolerances — ≤0.5 dB Cable Type — Single-mode fiber optic Polarize Loss — & #62;0.5dB Return Loss — ≤55 dB Wavelength — 1310/1550 nm Connectors — SC with UPC contacts