A zigbee protocal based wireless sensor network for Data Center designed on STM8 low power microprocessors. SHT11 sensor is used for each node. The distributed system collected data for further analysis and visulization for the whole system designed for data centers. A typical node has its layout as follows. https://cloud.githubusercontent.com/assets/12573192/11938153/c9e45e6e-a7e6-11e5-8c57-6dda6f8c5cf1.JPG