The smart doorbell camera features include 1080P HD WiFi, wireless, audio motion detector and night vision speaker, support 128GB SD card, available for iOS and Android. 2.4GHz WiFi is not 5GHz, smart doorbell, just download the APP: Aizhi, connect your mobile phone with 2.4GHz WiFi, our device can connect to WiFi even outdoors or through multiple walls, the connection is reliable. The transmission and signal are strong. It is compatible with iOS and Android. Motion Detection & Night Vision: The doorbell will send you a message when someone moves in front of the doorbell camera. It comes with infrared and LED sensors that allow you to take photos and record videos day and night. Keep your home safe at night. Video intercom and free cloud storage: You can watch and talk to visitors on your mobile phone and tablet anytime, anywhere, and transmit video or voice more clearly with noise reduction and adaptive bitrate technology. Free cloud storage with bank-level protection. (7-day cycle