Applicable door thickness: Supports a maximum door thickness of 87mm. Applicable door aperture: 15.9mm. APP remote control. Work with "Tuya Smart" and "Smart Life "apps, connect to wifi, and check the situation outside the door anytime and anywhere. Motion Detection. Remote Alarm. Alarm messages automatically sent to your mobile through APP. HD 1080P with Night Vision With infrared night , easy to caputer night images. Resolution: 1080P. 1920 x 1080. Pixels: 2 million (dpi) One Way Talk. listen to what the visitor says, but the visitor cannot hear what you say, protecting security and privacy. Photo/Video Recording. When someone stays at the door, the camera capture and record a video.(need a memory card ) Select the appropriate sensitivity for different situation, Manufacturer: Uxsjakjsd