> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/deployment-resources/install-and-commission/hardware-install-notes/reader-accessory-install-notes.md).

# Reader accessory install notes

Find installation notes for reader covers, spacers, mounting blocks, and interface accessories.

Install notes for reader covers, spacers, mounting blocks, and reader interface accessories.

| Product                             | Install note                                                                                                                                                                     |
| ----------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| T30 Mounting Block                  | [3E5816 Install Note T30 Mounting Block](https://media.gallagher.com/m/1601d5ffb261247b/original/3E5816-Install-Note-T30-Mounting-Block.pdf)                                     |
| Wiegand Protocol Converter          | [3E1932 Install Note Gallagher Wiegand Protocol Converter](https://media.gallagher.com/m/6a550c9ccb05e40a/original/3E1932-Install-Note-Gallagher-Wiegand-Protocol-Converter.pdf) |
| OSDP 8 Port Hub                     | [3E5775 Install Note OSDP 8 Port Hub](https://media.gallagher.com/m/28888609c038c6fd/original/3E5775-Install-Note-OSDP-8-Port-Hub.pdf)                                           |
| T10, T11, T12, T20 Protective Cover | 3E3684 Gallagher T10/T11/T12/T20 Protective Cover Install Note                                                                                                                   |
| T10 Protective Cover Spacer         | 3E2701 Gallagher T10 Protective Cover Spacer Install Note                                                                                                                        |
| T11/T12 Protective Cover Spacer     | 3E2702 Gallagher T11/T12 Protective Cover Spacer Install Note                                                                                                                    |
| T15 Mounting Block                  | 3E4484 Install Note T15 Mounting Block                                                                                                                                           |

The last four entries are archived documents. They are listed by document number so you can request the right revision.


---

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