... Line input: US plug (RJ11) 2. Phone output: US jack (RJ11) 3. .Material: ABS 94V0/94HB, Bronze 4. CE ... parts:Nickel plated Phosphor Bronze/Brass7.The modular jack contact spring are made of copper alloy with ... 3u", 6u", 15u", 30u" or 50u".8.The modular jack can be 6P2C, 6P4C, 6P6C, 8P2C, 8P4C, 8P8C ... MHz 30 MHzDC insulation resistance between A-wire and B-wire> 5MΩDC series resistance RDC≤ 50 ΩPOTS ...