With easy setup and the peace of mind they offer, doorbell cameras are valuable and worthwhile addition to modern home security. Most doorbell cameras also feature two-way audio systems so you can communicate with anyone on the other side of the door. Just keep in mind that other products—like indoor/outdoor cameras and motion sensors—are likely only compatible with doorbell cameras from the same brand. Installation Doorbell cameras are easier than ever to install, thanks to a recent shift towards battery-operated models. Though wired doorbell cameras require electric connection, some have battery packs as backup in case of a power outage.