Shenzhen AVLink is a professional AV integration and conference solution supplier, specialized in high-definition video PTZ camera and PTZ keyboard controller over 10 years. Our production series from indoor camera such as High-Definition video conferencing PTZ camera, MCU, All-in-one camera terminal, HDBaseT, tracking camera 4K camera to Outdoor camera. range from 5x, 10x, 20x, to 30x optical.