Most smart security cameras need a wired connection to receive power, which can be a pain when setting up cameras outdoors. The Blink XT2 is amongst the few battery-operated security cameras, lasting up to 2 years on a pair of standard AA cells. For Prime Day, Amazon-owned Blink is having a massive sale on the recently launched Blink XT2, with prices dropping to as low as $50 a pop.

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