Weatherproofing. Every model needs an IP (weatherproofing) rating to survive outside, so if you don’t see one, don’t buy those lights. There’s usually a lower rating for the control box compared to the rest of the lights, so be sure you can put that somewhere that’s a little less exposed to the elements. (As mentioned above, make sure you have an outdoor outlet, and check if there’s only one on a certain side of your home in case it limits your installation options.) A range of installation options. You’ll want a set that comes with plenty of options for your own installation, including adhesive and drilled mounting options. What you need will vary based on your home design and materials; e.g., you’ll want adhesive for homes you can’t drill into. WIRED reviewer Kat Merck, who tested a couple of different permanent lights, liked sets with screw-on holders that the puck-style permanent lights can slide onto. Controls for individual lights. This should be a no-brainer, but some cheaper lights won’t offer this ability or have more …