Smoke & CO Detectors

The CO Detector takes three (3) Energizer AA "UItimate Lithium" 1.5V batteries and has a life expectancy of 3-5 years depending on placement and usage.

To change your CO Detector batteries, twist counter-clockwise to remove the device from its bracket. Avoid pressing the test button while removing it, as this alert signal can be loud. Press the transparent button on the detector and slide the battery cover back. Then replace the three (3) batteries and slide the detector back into place.

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The Combination Smoke & Carbon Monoxide Detector takes two (2) CR-123A Lithium 3V batteries and has a life expectancy of up to 2 years, depending on placement and usage.

To change your Smoke & CO Detector battery, twist it off its bracket and open the back panel. Then, replace the lithium batteries and put the device back in place.

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The Smoke and Carbon Monoxide Alarm Listener takes one CR-123A Lithium 3 volt battery, and has a life expectancy of up to 3 years, depending on usage.

To replace the Alarm Listener’s battery, twist it counter clockwise off its bracket to reveal its battery. Put in a new CR123A lithium 3 volt battery and twist the device back on its bracket.

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The Smoke and Carbon Monoxide Alarm Listener has several lights that reflect the status of the device. This guide will highlight the various colors and their meaning.

When the Carbon Monoxide Detector detects particulate consistent with carbon monoxide, it will produce a siren as well as the following products:

• Base Station

• Extra Siren

• Wireless Outdoor Security Camera

• Outdoor Security Camera Series 2

• Wireless Indoor Security Camera

After the alarm has sounded two things will happen at once, depending on your monitoring plan. The first Primary Contact will receive an Alarm Text, and also a phone call from the monitoring center. Alarm Texts for life safety events are only to alert you of the hazard, and cannot be used to cancel the alarm or request dispatch. 

Due to the serious and potentially life-threatening nature of carbon monoxide poisoning, there is no way to cancel carbon monoxide alarms. The phone call made to the first Primary Contact will notify you of the alarm. If you do not answer the phone, our monitoring team will automatically request dispatch from your local fire department who will be dispatched to the location on file for your SimpliSafe® system.

We encourage you to save the monitoring center number to your phone. That number is 855-693-4911.

Once saved to your phone, you’ll also want to allow us access to bypass Do Not Disturb and Silent Profiles. This allows for Critical Alarm Notifications to get through to you, regardless of your phone’s volume or profile status.

When the Smoke & Carbon Monoxide Detector detects particulate consistent with smoke or carbon monoxide, it will produce a siren as well as the following products:

• Base Station

• Extra Siren

• Wireless Outdoor Security Camera

• Outdoor Security Camera Series 2

• Wireless Indoor Security Camera

After the alarm has sounded, two things will happen at once, depending on your monitoring plan. The Primary Contact(s) of that location will receive an Alarm Text, and the first Primary Contact will receive a phone call from the monitoring center. Alarm Texts for life safety events are only to alert you of the hazard, and cannot be used to cancel the alarm or request dispatch. 

For the phone call placed to the first Primary Contact for your system, you will be able to cancel the alarm for smoke over the phone without the need for your Safe Word. You can also cancel by disarming your system with your pin at the keypad. If you do not answer the phone or cancel the alarm at your keypad in a timely manner, our monitoring team will automatically request dispatch from your local fire department who will be dispatched to the location on file for your SimpliSafe® system.

If you would like to place a request for dispatch from your local fire department, you can do that over the phone with a Monitoring agent, by replying “H” to our Alarm Text, or by requesting help in the SimpliSafe® app using the Alarm Screen feature.

Due to the serious and potentially life-threatening nature of carbon monoxide poisoning, there is no way to cancel carbon monoxide alarms.

We encourage you to save the monitoring center number to your phone so you never miss our call. That number is 855-693-4911.

Once saved to your phone, you’ll also want to allow us access to bypass Do Not Disturb and Silent Profiles. This allows for Critical Alarm Notifications to get through to you, regardless of your phone’s volume or profile status.

If your Smoke and Carbon Monoxide Alarm Listener encounters an error that cannot be resolved during normal troubleshooting, you may need to reset the device.

To reset the Smoke and Carbon Monoxide Alarm Listener

1. Remove the Alarm Listener from its mounting bracket by twisting it clockwise

2. Remove the battery from the Alarm Listener and wait a few seconds

3. After a few seconds have passed, place the battery back into the Alarm Listener

4. Then, place the Alarm Listener back on its mounting bracket by aligning the triangles and twisting it clockwise until it snaps into place

Still need help?

If your Alarm Listener is still exhibiting an error after performing a reset, you will need to remove it from your system and then reinstall it.

To remove the Smoke and Carbon Monoxide Alarm Listener from your system

1. Open the SimpliSafe® Mobile App on your phone or tablet

2. Select My System from the navigation bar on the bottom of the screen

3. Select Device Settings

4. Choose your Alarm Listener

5. Scroll to the bottom of the screen and tap X Remove Device

To reinstall the Smoke and Carbon Monoxide Alarm Listener

For a step-by-step guide on how to install the Listener to your system, please refer to our Smoke and Carbon Monoxide Alarm Listener installation guide.