AXIS Q7404 Video Encoder H.264 compatible, high-performance, full-featured video encoder The AXIS Q7404 is a 4-channel video encoder that integrates four analog cameras into an IP-based video surveillance system, transmitting high-quality images while efficiently reducing bandwidth. It can simultaneously transmit multiple individually configured video streams from each channel at full frame rate, at any resolution up to D1. Different compression formats, resolutions, and frame rates can be set for each video stream. The AXIS Q7404 is equipped with video motion detection, tampering alarm, and audio detection functions. Each channel has two configurable input/output ports for connecting to external relays and sensors, and two-way audio is provided on one video channel. Product Catalog https://www.axis.com/dam/public/dc/a0/91/datasheet-axis-q7404-video-encoder-ja-JP-295654.pdf I was using it to transmit 4ch video over IP and monitor events. Please check the accessories as shown in the image. Also, since it is a used item, please check the images and no returns accepted.