20x SDI/HDMI/USB PTZ Camera with PoE+&Audio: ◆Advanced ISP, 1/2.8 inch 2.1MP sensor, providing full HD video. ◆20x optical zoom lens, 2x digital zoom with 60-degree FOV. ◆IP (PoE+), HDMI, 3G-SDI, USB2.0 video output interface. ◆White Balance/ Exposure/ Focus/ Iris can be adjusted manually. ◆Support PoE: one single CAT5/6 for video, control, and power. ◆Support line-in audio function: through IP stream only. AAC and LPCM audio encoding. ◆Control options: RS232/UVC1.1; Control protocol options: VISCA, PELCO-P, PELCO-D, VISCA over IP and ONVIF. ◆Support daisy chain, max 7 cameras connected under VISCA protocol.