Protect your family from the “silent killer” with a carbon best carbon monoxide detector detector. These affordable and easy-to-install alarms monitor carbon monoxide levels in the air and sound an alarm if they reach dangerously high levels. They’re especially important for the elderly, young children and anyone with heart or lung problems. But not all detectors are created equal, and you should prioritize features like interconnectivity, alert volume and display type when deciding on which model to buy.

You’ll also want to consider whether you prefer a battery, plug-in or hardwired detector. A hardwired carbon monoxide detector is wired directly to your home’s circuitry, making it the most reliable option. However, most hardwired detectors won’t work during a power outage, so they should be equipped with a battery backup.

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A battery-operated detector is a good choice for most homes, as it offers a little more flexibility when it comes to installation. You can place a battery-powered CO detector near any room, including bedrooms, and it will sound an alarm if the level of CO in the air rises above safe parameters. Some models also have a digital display that displays the carbon monoxide levels in parts per million, which can be helpful if you’re curious about how much CO is present.

Smart models are becoming more popular, as they can be controlled by apps and connected to other devices in your home. For example, you can use a First Alert Onelink app to test or silence your detector, interconnect other carbon monoxide sensors in your home and receive emergency notifications on your smartphone.