# 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[B3 Domain Administrator Manual](https://app.gitbook.com/o/vTf4HrtXl9bgDwvJVSxV/s/PTZRr97g6y1opAswEdao/ "mention").

The APIUniqueID described in [script-preparation](https://help.boomerang3.com/b3-sms-device-installation-manual/installation-procedures/router-setup/script-preparation "mention") is the identifier used in the webhook.