When the power fails on a subzero night, your alarms are only as trustworthy as the batteries hiding behind their plastic covers. The chemistry you choose can decide whether a smoke detector screams ...

They’re much more expensive than the typical 9-volt battery, but they deliver peace of mind that no dumb battery can. Few life events are more annoying than being awakened at 3AM by a chirping smoke ...

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Battery-powered security cameras are an excellent option for recording activities in homes or businesses. Unlike wired types, battery cameras can be placed anywhere without extending electricity and ...

The RSA-400 looks like your ordinary, everyday smoke detector. The included Roost Smart Battery enables it to connect to your Wi-Fi network, and that’s how it sends alerts to your smartphone if the ...

Arlo’s user-friendly equipment and competitive pricing make it one of our top picks for a home security system. NerdWallet is committed to editorial integrityMany or all of the products on this page ...

Home security and alarm systems have become smarter, more affordable and far easier to install in recent years, with most offering app control and integration with other smart home devices, and some ...

Power and internet outages can throw a stick in the spokes of a smart home. Along with leaving you in the dark, they can disable the security system of your house, especially if you don't have a ...