Simple to use and install, with a clean, unobtrusive design that fits any entryway. Infrared night vision and photo function - See visitors clearly after dark and capture photos for reference. - Acts as a functional doorbell, providing immediate visual verification of who is at the door. Built-in memory, no card required - Standalone circular memory automatically overwrites oldest files, ensuring continuous recording without the need for SD cards or extra setup. Wide viewing angle - 90 degree wide-angle lens delivers a larger field of view, reducing blind spots and helping you notice visitors earlier. Key benefits - Easy operation: quick to set up and simple to use every day. - Reliable door monitoring: all-in-one solution with night vision, doorbell function, and photo capture. - No extra hardware: built-in memory means fewer components to manage. Use scenarios - Home entry monitoring: keep an eye on front door day and night, with clear identification of visitors. - Small apartment or office entry: compact, easy to mount, and provides broad visibility in tight spaces. - Deliveries and visitors: quickly verify who arrived and capture a photo for reference even when you’re away. Performance and compatibility - Functionally focused on door monitoring with built-in memory for straightforward, dependable operation. - No card insertion required; operates as a standalone unit with simple, practical features.