Ethernet over fiber extension: Use this full/half duplex fiber media converter to convert and extend a Gigabit Ethernet connection up to 20 km (12.4 miles) using singlemode LC fiber cable Includes SFP: For added convenience, this IT-grade network fiber media converter Includes an SFP transceiver, enabling an 1310 nm LC single mode Gigabit fiber connection Plug and play: This singlemode fiber media converter provides a quick and easy setup; it can be used as a standalone device or installed into the 20 slot 2U rackmount chassis (ETCHS2U) Maximum durability: Built to withstand harsh environments, this rugged media converter has a durable steel housing and has an operating temperature range of 0 degrees Celcius-50 degrees Celcius (32 degrees Fahrenheit - 122 degrees Fahrenheit) International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.