Wi-Fi connectivity eliminates the need for wires, enabling two-way intercom communication between the doorbell and your mobile phone. Real-time connection to the mobile phone supports two-way calls, photography, and recording, keeping you safe. It supports 2.4 GHz Wi-Fi (5 GHz Wi-Fi is not supported). Equipped with infrared night vision, it automatically activates at dusk. Two-way audio allows you to communicate with visitors via two-way audio with a noise-canceling microphone. You can even monitor the weather at your front door by watching live video. Easy to install: just download the app and connect it to the doorbell. No wires or cables required. Access information from anywhere. The doorbell can be controlled via the app, offering automatic, smart, and portable operation. Portable size and weight, easy to install, no battery included, battery required for use (supports 2.4G Wi-Fi, does not support 5G Wi-Fi and 2.4G Wi-Fi).