The Eyenix EN6 series provide specialized solutions for Doorbell Cameras. H.264/h.265/JPEG codecs are designed with hardware demonstrating strong performance, and supporting Wi-Fi, LCD, Ethernet, and USB for video output and video control interface. Also, it supports two-way audio and echo canceling through audio codec, and provides optimized SD card solutions. Low power and fast booting shows a strong aspect on battery-based products. EN6 series provides various sensor interfaces that allows customers to use almost every sensors they want, and high performance ISP and efficient control techniques provides high visibility at both day and night, making the images very visible at any situation. We recommend EN673 for considering low cost and EN675 for high performance.