# Installing add-ons on SLZB-Ultima

### Importantly

<p class="callout warning">**Please follow the placement of add-ons in these photos carefully. An incorrectly installed add-on may damage your device!**</p>

### Microphone addon

[![image.png](https://smlight.tech/support/manuals/uploads/images/gallery/2026-01/scaled-1680-/J55image.png)](https://smlight.tech/support/manuals/uploads/images/gallery/2026-01/J55image.png)

### Z-Wave, POE, 4G/LTE

[![image.png](https://smlight.tech/support/manuals/uploads/images/gallery/2026-01/scaled-1680-/pAUimage.png)](https://smlight.tech/support/manuals/uploads/images/gallery/2026-01/pAUimage.png)

[![image.png](https://smlight.tech/support/manuals/uploads/images/gallery/2026-01/scaled-1680-/x9Dimage.png)](https://smlight.tech/support/manuals/uploads/images/gallery/2026-01/x9Dimage.png)