Expandable: It supports expandability from one-to-one communication up to one-to-six connections 7-inch Capacitive Touchscreen: The device boasts a 7-inch capacitive touchscreen that delivers high definition, widescreen images. It is radiation-free, energy-efficient, and provides excellent image clarity Hands-Free Intercom: Enjoy the convenience of hands-free intercom functionality Electric Door Unlocking: It features electric door control and unlocking capabilities for added security and convenience Outdoor Surveillance: The device includes outdoor monitoring capabilities, allowing you to keep an eye on your surroundings Adjustable Image Settings: Customize image brightness, color, ringtone, and intercom volume according to your preferences High-Sensitivity Capacitive Touchscreen: With a high-sensitivity capacitive touchscreen, an elegant UI interface, and clock display, it offers a visually pleasing and luxurious experience Photo and Video Capabilities: Capture photos and record videos, with support for up to 32GB TF cards Music Selection: Choose from a selection of 16 different music options Versatile Mounting Options: You can mount it on the wall or place it on a table, offering flexibility in installation Specifications: Model: 620FC11 Power supply: AC: 100-240V 50Hz/60HZ, DC 15V 1.2A Whole machine current: less than 800mA Call delay time: 120S + 10% Monitoring delay time: 60S + 10% Camera sensor: 700 lines Lens: 3.6 mm 92 degrees Outdoor Camera: Night Vision: Infrared night vision function Waterproof: IP55 level Material: aluminum panel+ABS Function: Four-core wire interface, connected to NC/NO unlocking function Note: Does not include built-in rechargeable battery and memory card.