Features: 100% brand new and high quality 100M single-mode dual-fiber, fiber optic transceiver High-speed and stable, high-quality transceiver: stable and fast data The whole machine adopts excellent metal shell protection: high temperature resistance, wear resistance, long life Long service life: lengthen the cooling vent, so that the cooling speed is faster Strong practicability and wide range of uses: suitable for intelligent broadband, cable TV network, residential network construction, fiber to the home system, security monitoring system and other areas Package Includes: 1xOptical Transceiver Specifications: Product name: 100M single-mode dual-fiber Product rate: 100Mbps Color :Black Material: Metal Transmission wavelength: 1310nm/1550nm Transmission distance: 20KM note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.