Arlo 3 Camera Security Kit | $209 | Amazon
Photo: Amazon
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Netgear’s Arlo home security cameras are among the few that can run completely on battery power, and these models add additional touches like HD, night vision, motion detection, records and alerts, and weatherproofing. So if you’re ready to start monitoring your home like a paranoid person, Amazon will sell you the three camera kit for $209 today.