SimpliSafe Smoke & Carbon Monoxide (CO) Alarm Listener

The SimpliSafe Smoke & Carbon Monoxide (CO) Alarm Listener enables customers to integrate their current smoke and CO detectors with SimpliSafe's connected system and 24/7 professional monitoring
Sept. 16, 2025
3 min read

The SimpliSafe Smoke & Carbon Monoxide (CO) Alarm Listener enables customers to integrate their current smoke and CO detectors with SimpliSafe's connected system and 24/7 professional monitoring for fire and carbon monoxide hazards.

The Alarm Listener works with existing detectors to trigger the SimpliSafe system when there's smoke or CO danger. When paired with professional monitoring, rapid emergency response is enabled. 

The SimpliSafe Smoke & CO Alarm Listener is equipped with a microphone that listens for the distinct sound patterns of smoke and carbon monoxide (CO) detectors in your home. When it detects an alarm, it identifies the type of threat and signals the SimpliSafe Base Station. This allows SimpliSafe to send you a notification and enables professional monitoring agents to initiate an emergency response. 

Key features include:

  • Works with existing detectors in the home: The Alarm Listener works with all UL-certified residential smoke and carbon monoxide detectors to enable 24/7 professional monitoring for your entire home.

  • UL-Certified: The Alarm Listener is equipped with a microphone that's certified to differentiate between smoke and carbon monoxide alarms and transmit the appropriate alarm signal to the Base Station.

  • Rapid emergency response: Once triggered, the Alarm Listener signals the SimpliSafe Base Station, enabling SimpliSafe to send the owner a notification and prompting SimpliSafe's monitoring agents to request immediate emergency dispatch, even if the owner cannot be reached.

  • Instant notifications: Real-time alerts are pushed via the SimpliSafe App if an alarm is triggered.

  • Easy installation: The Alarm Listener is wireless and designed for simple self-installation with minimal tools and step-by-step instructions in the SimpliSafe App.

  • Only one listener needed for hardwired systems: For homes with interconnected, hardwired smoke and CO detectors, only one Alarm Listener is needed to monitor the entire home. For battery-powered systems, one listener is recommended per detector for monitoring.

  • Long-lasting battery life: The Alarm Listener has a long-lasting battery designed to last up to three years.

Pricing & Availability

The SimpliSafe Smoke & CO Alarm Listener is available for purchase starting today for $44.99 on SimpliSafe.com and on BestBuy.com in the US.

The Listener will launch later this fall on Amazon.com. 

The Alarm Listener requires a SimpliSafe Gen 3 Home Security System (Base Station and Keypad), a UL-certified residential smoke and/or CO detector, and a professional monitoring plan for emergency dispatch.

To access SimpliSafe Professional Monitoring, customers can choose between our monitoring plans, including Core ($32.99/month), Pro ($49.99/month), and Pro Plus ($79.99/month).

Additional details about SimpliSafe monitoring plans can be found here.

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