If you’re using Blink home security cameras—particularly the Blink Outdoor 4—you need this gadget on your network.

Although isolating your smart devices on a guest network can strengthen home security, it’s not a one-size-fits-all solution.

The NBC Select staff also spent two years testing over 20 pairs to recommend the best options. Want more from NBC Select? Sign up for our newsletter, The Selection, and shop smarter. In the past ...