The Dahua DH-DB43BB-BTR is a smart 4MP Wi-Fi battery video doorbell designed to deliver clear 4MP video, intelligent detection features and flexible wireless installation. Features an ultra wide 180° fisheye lens with built in two way audio and support for both 2.4GHz and 5GHz Wi-Fi 6 networks, this doorbell provides reliable front door monitoring with instant notifications directly to the DMSS mobile app.