File:Surge APC PER7T Z98010214399 teardown phoneboard 01.jpg
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Telephone-line protection circuit board showing modular input/output jacks, protection components, fuses, and surge-suppression circuitry.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:01, 26 October 2026 | | 1,600 × 944 (545 KB) | PowerPig (talk | contribs) |
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