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The appearance of the rj11 interface is similar to that of the rj45, but it should not be mistaken for them to work together

RJ stands for Registered Jack, which is the general name of the connector developed by Western Electric Co. The RJ11 shape is defined as a 6-pin connection device. But RJ11 is not only used to represent the 6-pin connector, it can also refer to the 4-pin version.

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RJ11 is a cable connector for telephones, ADSL and modem cables, etc. Although equipped with a space for six lines, usually only four needles are used. The RJ45 connector and the RJ11 connector have similar appearance, but there are differences in size, wiring standards and application range. Since the RJ11 crystal plug usually has only 6 grooves and 4 contacts (6p4c), the shape and structure are smaller than RJ45, so the RJ11 plug is a little smaller than the RJ45 jack, and the size difference between the naked eye is not large, so some people may think that RJ11 Can work with RJ. This is not the case. If RJ11 plug is used for RJ45 jack. It may cause damage to both.

The RJ11 interface has a wide range of applications. However, due to the current working electromagnetic environment becoming more and more severe, and RJ11 often works beside high-voltage power, the RJ11 interface often has overvoltage or overcurrent phenomenon, so there are lightning protection, anti-surge, anti-interference, anti-static, etc. New performance requirements.

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