Security and safety for your home: This digital door viewer with a 2.8-inch LCD screen lets you clearly see visitors without opening the door, providing greater security and peace of mind when someone rings the bell. Automatic photo capture: The smart doorbell camera automatically takes photos when visitors press the bell and stores images even when you are away, so you won’t miss who visited while you were shopping or at work. Battery powered and easy to replace: Powered by 4 AAA batteries with a simple swap design, there is no need to remove the entire unit to replace the batteries. The LCD screen shows battery level so you know when it needs replacement. Built-in loop storage: The electronic door viewer uses continuous loop storage for visitor photos, eliminating the need for external memory cards or complex setup. Install and operate with confidence. Use cases: - At home: verify visitors on the 2.8-inch LCD before opening the door. - Away from home: review who visited after work or errands. - Busy days: capture and review deliveries or guests who ring the bell.