Built in camera with 1.3MP resolution and 6x digital zoom gives you a clear view of the area around the door802.11a/b/g/n/ac (2.4 GHz and 5 GHz) Wi-Fi and Bluetooth Low Energy connectivity allow you to check missed events and history anytime, anywhereCompatible with chimes rated to work with a 16 - 24VAC and 10VA doorbell transformerGoogle home app lets you monitor and change settings for easy and convenient usageNight vision provides crystal clear picture quality even during low-light conditions to identify who is at the doorBuilt-in intelligence and motion sensors identify and notify you about a person, package, vehicle, or animal for easy detectionTwo-way communication ensures loud-and-clear conversation with the visitorAmazon Alexa and Google Assistant compatibility let you monitor and control the device with simple voice commands