Whether you're away from home a lot or just want to always know who is around, a good security camera is important and can offer a whole lot of peace of mind. Great cameras can be expensive and either wiring them in or charging batteries can be a pain, though. That's why this two-pack of the Eufy SoloCam S40 for $220 at Best Buy is so great -- you get two cameras that are powered by the sun while saving $80 off their usual price. Considering these cameras for $150 apiece at Amazon, that's a solid saving. Better yet, if you're a My Best Buy Plus or Total member, you'll get a further $20 off, dropping the two-pack down to $200. The deal ends today, Aug. 12, though, so don't wait around too long to snag it.  

The Eufy SoloCam S40 -- also known as the S230 -- features 2K HD video, which can make it easier to recognize facial features and discern between family, friends and strangers. It also features full-color night vision up to 26 feet away.

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The cameras are solar-powered, so they can be installed anywhere that gets at least two hours of sunlight per day. Installation is super easy since the cameras are cordless, and once the devices are set up, they can be controlled via app. You can get instant alerts when someone approaches your home, and you can even scare off would-be burglars with the attached 600-lumen spotlight and 90-decibel siren. These devices don't require a monthly subscription, but they will need to connect to your Wi-Fi or cellular network.

If you're looking for other smart home devices to help simplify your daily life, check out our roundup of the best smart home deals, from bulbs to garage remotes.