1.25 Gb/s COPPER RJ45 SFP TRANSCEIVER PR4JR20K

PR4JR20K is a 1.25 Gb/s copper RJ45 SFP transceiver. Before selection, confirm that the host SFP port accepts this exact module and that the link design calls for an RJ45 copper interface. The listing does not state supported cable categories, maximum link length, negotiated Ethernet modes, power consumption or operating temperature, so obtain those values from the manufacturer documentation and compare them with the project. Check the host device requirements, intended port configuration and cable already specified for the installation. Record the transceiver code, host port and remote endpoint in the network drawing and bill of materials. Do not infer compatibility solely from the SFP form factor, RJ45 connector or 1.25 Gb/s rate. During commissioning, follow the host and transceiver documentation for insertion, configuration and link-status verification, without assuming unsupported speeds or distances.