# Floor signal

> A Pagerless term: a signal that always wakes someone and can never be played down by the AI. There are four: app silent, crash loop, 5xx burst and payments failing.

URL: https://pagerless.dev/glossary/floor
Updated: 2026-10-22

## In Pagerless

Checked before anything else. See [levels](https://pagerless.dev/docs/levels).

## Related terms

- [Severity](https://pagerless.dev/glossary/severity): A label for how bad an incident is, often SEV1 to SEV4, used to decide who responds and how fast.
- [Heartbeat monitoring](https://pagerless.dev/glossary/heartbeat-monitoring): Detecting a dead service by expecting a regular signal from it and alerting when the signal stops.