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2-6339191-1 Single Port Tap Up SMD RJ45 Connector Without Magnetics

RJ11, RJ14, and RJ25 are of the same series, with the same size, 9.5mm wide, but the number of contacts is different. RJ11 has only a pair of contacts in the middle, which can be connected to a pair of wires, expressed as 6P2C (six position, two conductor); RJ14 uses 4 contacts in the middle, and can connect 2 pairs of wires, expressed as 6P4C; RJ5 uses all 6 contacts , You can connect 3 pairs of lines, expressed as 6P6C.
Sometimes this connector can also be used to provide low-voltage low-power power (AC or DC), commonly used PIN2 and PIN5 (black and yellow wires). RJ11 is generally used as the collective name for this 9.5mm series, and RJ11-6P2C, RJ11-6P4C and RJ11-6P6C are used to distinguish the number of contacts. The phone also uses a connector to connect the phone and the handle, called 4P4C (also called RJ22, and forms a series with RJ9 and RJ10), with 4 contacts, 7.5mm wide, smaller than RJ11 feet .