High Resolution: The video doorbell has a high resolution, providing a clear and detailed picture so that you can see clearly what is going on outside your door. Motion Detection: Wireless video doorbell is equipped with motion detection function, which can detect motion outside the door in time and give you real time push warning notification. Infrared Night Vision: Smart video doorbell has a built in infrared night vision function that can be automatically switched on in dark environments to provide infrared fill light, giving you a clear view of what's going on at night. Remote Monitoring: Night vision video doorbell enables mobile phone remote monitoring through wireless WiFi connection, you can monitor the situation outside your door anytime and anywhere. Real Time Intercom: Wireless smart video doorbell supports two way voice intercom, so you can talk to the visitor at the door in real time.