# Alerts (https://logable.app/docs/guides/alerts)

Get alerted before a limit is crossed, from a preset or a rule you build.



An alert tells you before a reading crosses a limit you set, so you do not have to watch a screen. This section covers building a rule, starting from a preset, and sending alerts to a webhook.

## Pages in this section [#pages-in-this-section]

- [Get alerted before a limit is crossed](/docs/guides/alerts/get-alerted-before-a-limit-is-crossed). Set a threshold rule on a device metric, choose who is told and how, and clear it when the value recovers.
- [Use a ready-made preset](/docs/guides/alerts/use-a-ready-made-preset). Add a proven rule for your device type in two clicks, then adjust it if you need to.
- [Send alerts to a webhook](/docs/guides/alerts/send-alerts-to-a-webhook). Register an HTTPS endpoint, copy its signing secret once, attach it to a rule, and test it.