The iVMS-4200 client software is centralized video management software using a distributed structure for surveillance device control and management. iVMS-4200 is designed to get access and provide management to the connected multiple devices, including DVR, NVR, DVS, network camera, and decoder. Using the client, you can easily live view the channels, record and store the file, remotely configure the device parameters, control PTZ, get alarm information and respond, and display video on the TV wall. With the help of other servers which are also components of the iVMS-4200, it can provide functions as easing the network load by using a stream media server, and using the storage server to store the record files and pictures. This client software can be adopted in many different surveillance scenarios with medium or small scale.