With easy setup and the peace of mind they offer, doorbell cameras are valuable and worthwhile addition to modern home security. Best with Universal Compatibility Eufy Dual+ Security Video Doorbell Amazon Also Consider $260 newegg.com Credit: Amber Joglar ProsCons Key Specs Video 720p, 2K Field of View 160° Power 16- to 24-volt AC Installation Battery or wiredLike our other video doorbell picks, the Eufy Dual has two-way audio, an easy-to-press doorbell button, and solid night vision. Remember that other products—like indoor/outdoor cameras and motion sensors—are likely only compatible with doorbell cameras from the same brand. Though wired doorbell cameras require electric connection, some have battery packs as backup in case of a power outage. We've noted the amount of processing time it takes each camera doorbell to open up into a live camera view after an event trigger.