Uncooled laser diode with structure Reach 20 km Transmission Distance Fast Ethernet and ITU G.957 Compliant Compliant RoHS and lead free Complies with Telcordia -468-CORE Colour:As Shown Material:plastic Operating case temperature: Standard: OC to +70C Extend: -20C to +85C Industrial:-40C to +85C Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 2 pairs * 1 x 9 Transceiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.