Get alerted the minute a dangerous hazard threatens your home with the 2-in-1 smoke and carbon monoxide detector. Engineered to tell the difference between dangerous smoke and burning food, so you’ll always know when there’s a real emergency. It’s also backed by SimpliSafe’s award-winning security system and 24/7 professional monitoring—any time there’s trouble, emergency assistance will be quickly sent to your front door.* Setup is easy too with the included hardware. Plus, thoughtful notifications will give you daily updates on your detectors’ status, so you know it’s working properly. *Emergency dispatch is available with select monitoring plans.
Q: Does this smoke and carbon monoxide detector work with a smart home system?
A: Yes, you can arm the system at home with Google Assistant or Amazon Alexa.
Q: What type of alerts will I receive if the smoke or carbon monoxide detector is activated?
A: You will receive instant phone alerts through the SimpliSafe app if the smoke or carbon monoxide detector is activated.
Q: Why does this smoke and carbon monoxide detector have two sensors?
A: The combined smoke and CO detector senses dangerous levels, so you cut down the number of sensors you need to keep your family safe.
Q: How is this smoke and carbon monoxide detector powered?
A: This detector is battery powered and does not need to be wired.
Q: What is the motion sensor's range on this smoke and carbon monoxide detector?
A: The motion sensor has a 90 degree field of view and detects motion within 30 feet.
Q: What is the maximum range this smoke and carbon monoxide detector can be from the base station?
A: This detector has a maximum wireless range of 1000 feet.
Q: How will I know when the battery needs to be changed in the smoke and carbon monoxide detector?
A: Your SimpliSafe security system will notify you when the battery needs to be changed.
Q: What is the UL listing number for the carbon monoxide detector?
A: The Smoke Detector piece of the combo detector is designed to meet UL-217. The Carbon Monoxide piece is designed for UL-2034.
Customers enjoy the Smoke & Carbon Monoxide Detector, particularly highlighting its ease of use. Many customers have commented on how simple it was to install. Overall, the detector seems to be well-received for its user-friendly design.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

Get alerted the minute a dangerous hazard threatens your home with the 2-in-1 smoke and carbon monoxide detector. Engineered to tell the difference between dangerous smoke and burning food, so you’ll always know when there’s a real emergency. It’s also backed by SimpliSafe’s award-winning security system and 24/7 professional monitoring—any time there’s trouble, emergency assistance will be quickly sent to your front door.* Setup is easy too with the included hardware. Plus, thoughtful notifications will give you daily updates on your detectors’ status, so you know it’s working properly. *Emergency dispatch is available with select monitoring plans.

Pair the Smoke & CO Alarm Listener with your current detectors to enable SimpliSafe 24/7 professional monitoring for fire and carbon monoxide. The Alarm Listener works with your existing detectors* to trigger your SimpliSafe System when there’s danger. If an alarm is detected, you’ll get fast phone alerts, so you’ll know something is wrong within seconds. Plus, with a professional monitoring plan, our agents can request immediate emergency dispatch—even when you can’t be reached. The Alarm Listener is finely tuned to hear only the standardized tone patterns of smoke and CO detectors, so you’ll get fewer false alarms from loud noises and televisions. *Works with UL certified residential Smoke and CO detectors. Professional monitoring plan required for emergency dispatch.

The right temp in just the right spot - Meet the Nest Temperature Sensor (2nd gen). Now it’s easy to manage hot and cold spots throughout your home. Just put it in your preferred room and get the right temp, right where you want it. It’s battery powered, so you can set it, then forget it’s even there.¹
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