# Understand the monitoring chain

Lesson 3 of [Alarm buying foundations](https://alarminstallers.fyi/academy/alarm-buying-foundations.md), 15 minutes.

When a proposal includes monitoring, ask the provider to describe the whole chain from a signal at the property to the action taken afterwards. UL's public summary defines a monitoring station, sometimes called a central station, as an organisation monitoring fire, security or other specified signal…

The rest of this lesson is for learners enrolled in the course. [See how Alarm buying foundations works](https://alarminstallers.fyi/academy/alarm-buying-foundations.md).

Also on the [web page](https://alarminstallers.fyi/academy/alarm-buying-foundations/understand-monitoring).