Main Processor: Embedded Processor Button Type: Mechanical Interoperability: ONVIF; CGI Network Protocol: RTSP; DNS; P2P; UPnP; RTP; RTMP; SIP; SSH; HTTP/HTTPS; ONVIF Camera: 1/2.8" 2-MP CMOS HD Camera Field of View: H: 80°; V: 40°; D: 90° WDR: 120 dB Noise Reduction: 3D NR; 2D NR Video Compression: H.264; H.265 Video Resolution: Main stream: 720p, WVGA, D1, and CIF; Sub stream: 1080p, WVGA, D1, QVGA, and CIF Video Frame Rate: PAL: 25 fps NTSC: 30 fps Video Bit Rate: 768 kbps–8 Mbps Light Compensation: Auto IR Day/Night: Auto(ICR)/Color/B/W; Color/B/W Audio Compression: G.711a; G.711u; PCM Audio Input: 1 Audio Output: Built-in speaker Audio Mode: Two-way audio Audio Enhancement: Echo suppression/digital noise reduction; Echo suppression; Digital noise reduction Audio Bit Rate: 16 kHz, 16 bit