English: This three-conductor jack has two normally closed switches connected to the contacts themselves. This is useful for patch panel normalization.
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This three-conductor jack has two normally closed switches connected to the contacts themselves. This is useful for patch panel normalization.
Uploaded a work by Omegatron, which I then simply split up into 4 separate images without the letter A, B, C, D. from https://commons.wikimedia.org/w/index.php?curid=46613663 with UploadWizard