Smoke & CO Detectors
Get the most out of your SimpliSafe system by getting answers to your questions and support for your devices.

Smoke & CO Alarm Listener
Get the most out of your SimpliSafe system by getting answers to your questions and support for your devices.
Smoke Detector
Get the most out of your SimpliSafe system by getting answers to your questions and support for your devices.
CO Detector
Get the most out of your SimpliSafe system by getting answers to your questions and support for your devices.
Smoke & CO Detector
Get the most out of your SimpliSafe system by getting answers to your questions and support for your devices.
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Testing the Carbon Monoxide Detector
Test Mode is a great way to test the connection between your Base Station and other SimpliSafe® products. We recommend periodically placing your system into Test Mode to ensure that your devices are still communicating with the Base Station without any errors. Placing Your System Into Test Mode Disa
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CO Detector
Testing the Smoke & Carbon Monoxide Detector
Test Mode is a great way to test the connection between your Base Station and other SimpliSafe® products. We recommend periodically placing your system into Test Mode to ensure that your devices are still communicating with the Base Station without any errors. Placing Your System Into Test Mode Disa
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Smoke & CO Detector
Malfunction Error
If you see a “Malfunctioned” error for your Smoke Detector, Carbon Monoxide Detector, or Smoke & Carbon Monoxide Detector, that means that the device should be replaced as soon as possible. If your device is still within warranty, our Support team can send you a replacement.
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Smoke & CO Detector
Smoke & Carbon Monoxide Detector LED Status Light Colors
The Smoke & CO Detector has several light states that reflect the status of the device and change when there is the presence of smoke or CO within your home. This guide will highlight the various indicators and their meanings. Indicator Sound Meaning Red LED blinks 3 times rapidly 3 chirps, 1 second
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Smoke & CO Detector
Tamper Detected Error
You may encounter a constant yellow light that is not accompanied by a chirp on your Smoke Detector, CO Detector, or Smoke & CO Detector, or a blinking red light on your Smoke & CO Alarm Listener, accompanied by the app error “Tamper Detected”. This is an indication that the device is not fully atta
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Smoke & CO Detector
Preventing False Alarms From the Smoke and Carbon Monoxide Alarm Listener
The Smoke and Carbon Monoxide Alarm Listener monitors nearby smoke and carbon monoxide detectors by listening for their alarms. When three smoke or CO alarm sequences are heard, the Alarm Listener will trigger an alarm. To help prevent false alarms from the Alarm Listener, try to not install the Ala
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Smoke & CO Alarm Listener
Where to Place the Smoke and Carbon Monoxide Detector
The Smoke & Carbon Monoxide Detector alerts you at the first sign of smoke or CO within your home. You should place this device near sleeping areas, ensuring that there is one on every floor within your home. If wall mounting your Smoke & Carbon Monoxide Detector, ensure that it is no more than 12 i
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Smoke & CO Detector
