Your front door is a busy place. The Lorex 2K Battery Video Doorbell helps you stay connected, no matter where you are. With the built-in battery, this doorbell is easy to install and fits almost any door. Choose a Wired connection if you prefer continuous power. Catch the finest details with 2K Resolution and Color Night Vision and always know who's there with Person Detection. Keep your video recordings where they belong, private and in your control with the local pre-installed 32GB MicroSD (upgradable to 256GB) with no recurring monthly fees.