Bring security and peace of mind to your doorstep with the Reolink Doorbell Battery. This industry-first doorbell combines advanced smart detection, seamless connectivity, and clear visuals. -Capture Every Detail: 2K 4MP resolution and 1:1 aspect ratio for a full head-to-toe view. -Stay Alert: Take advantage of smart detection of people, vehicles, and packages with instant notifications. -Install With Ease: Wire-free setup with flexible power options and compatibility with existing chimes. -Connect Reliably: Dual-band Wi-Fi (5GHz and 2.4GHz) for strong, fast connections. -Store Securely: Features up to 256GB of local storage with no monthly fees. By the way, it's expandable with Reolink Home Hub. With this device, gear up to meet all your home security needs without subscription fees. Stay informed and in control, day and night.