---
title: "What Is Interconnected alarms? Electrical Glossary"
description: "Interconnected alarms are linked smoke or CO alarms, by wire or radio signal, so that when one sounds, all of them sound."
url: https://danielelectric.multisites.ai/glossary/interconnected-alarms
publisher: Daniel Electric
phone: +1-817-481-8606
quote: https://danielelectric.multisites.ai/contact
---

Safety devices

# Interconnected alarms

Interconnected alarms are linked smoke or CO alarms, by wire or radio signal, so that when one sounds, all of them sound.

In a large or multi-level home you may not hear one alarm from another floor. Linking them solves that. The U.S. Fire Administration says to choose interconnected smoke alarms so that when one sounds, they all sound. CPSC says the same for CO alarms.

Links are made by wires between [hardwired smoke alarms](https://danielelectric.multisites.ai/glossary/hardwired-smoke-alarm) or by wireless radio. Adding a link in a ceiling box is a job for a licensed electrician. See the [smoke alarm](https://danielelectric.multisites.ai/glossary/smoke-alarm) entry and [smoke and CO detector installation](https://danielelectric.multisites.ai/smoke-and-co-detector-installation).

[Daniel Electric can helpSmoke and CO detector installation](https://danielelectric.multisites.ai/smoke-and-co-detector-installation)

## Related terms

-   [Smoke alarm](https://danielelectric.multisites.ai/glossary/smoke-alarm)
-   [Hardwired smoke alarm](https://danielelectric.multisites.ai/glossary/hardwired-smoke-alarm)
-   [Carbon monoxide detector](https://danielelectric.multisites.ai/glossary/carbon-monoxide-detector)

## Sources

1.  [U.S. Fire Administration: Smoke Alarms](https://www.usfa.fema.gov/prevention/home-fires/prepare-for-fire/smoke-alarms/)
2.  [U.S. Consumer Product Safety Commission: Carbon Monoxide Information Center](https://www.cpsc.gov/Safety-Education/Safety-Education-Centers/Carbon-Monoxide-Information-Center)

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