Image: Eufy Home surveillance used to be pretty complicated, involving steps like running internet and power cables all over your house to connect everything into a cohesive network. Nowadays, you can get it all done with Wi-Fi and battery power—and if you get a security camera with a built-in solar panel, you don’t even have to worry about charging. I’m talking about this Eufy SoloCam S220 that’s on sale for $49.99 on Amazon. That’s a whopping 50% discount from its original $99.99 pri...