Wi-Fi video doorbell. High quality video HD 960P. Wireless WiFi / IP connection. Recording / Activation by motion detector. Support Micro SD card for recording. Silent recording. Work from the built-in battery for about 1 year. Support for Android and iOS. Support for JAVA devices (sensors, cameras, relays, sockets). Work as part of a smart home: Alexa Echo, Google Home, IFTT, Tuya. Work without 220V and wires.