> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/b3-sms-device-installation-manual/installation-procedures/installation-in-b3.md).

# Installation in B3

The B3 SMS device is defined in B3 as an SMS dispatcher using webhook as a delivery method in alarm group. The detailed description can be found in[A-B3 Domain Administrator Manual](https://help.boomerang3.com/boomerang-3-domain-administrator-manual/).

The APIUniqueID described in [Script preparation](/b3-sms-device-installation-manual/installation-procedures/router-setup/script-preparation.md) is the identifier used in the webhook.


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