Video Sensor Type 1/2.9 Inch CMOS Sensor(F23) Pixel 2.0mp 1080P Min. LUX 0.1Lux Video Coding H.264, MJPEG Code Stream Double Stream Coding Support CBR/VBR Lens Lens Type Full Glass Lens Lens Focus: 2.9mm, Aparture: 2.4 View Angle 138° Night Vision Infrared Light 4PCs Infrared Light, Wavelength 940nm, Range: 5m Day And Night Automatic Switching Photosensitive Sensitivity 0.7?/Lux Audio Audio Coding ADPCM 2 Way Audio No Built-In Mic Support Built-In Speaker No Connection Network Protocol P2P, ONVIF2.4, TCP/IP, HTTP,TCP, UDP, SMTP, DHCP, NTP, RTSP, RTMP, MQTT Wired Connection No Wireless Network WIFI?IEEE 802.11b/g/n? Wireless Connection WIFI Connection Connection Sound Wave Code And AP Hot Spot AP Hot Spot Connection Support P2P Connection Support