Security cameras have become commonplace in and around homes, as people use them to keep tabs on their property and help police solve crimes.

But selecting the right camera system, setting it up correctly and maintaining the cameras is critical for them to be effective.

“It’s a very efficient way of investigating crimes,” said Maj. James Curry with the Fairfax County Police Department’s Criminal Investigations Division.

With Black Friday and Cyber Monday around the corner, one popular buy is camera systems. Curry said it’s important to choose the right system for your home.

Many cameras send video wirelessly through hubs or the internet, but for outdoor cameras, you’ll need to decide whether you want battery-powered cameras or cameras wired to power.

“In these critical moments, if we

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