In industries, one of the major functions for operators is to operate and control the process parameters .These process parameters may be temperature, level etc. These parameters are not only important for controlling of the process but are closely related to the safety of the plant as well as the operators, infrastructure and surrounding areas. In process industries, it is very important to achieve real time data of the process as delay in actions during critical situations can lead to catastrophic events. Nowadays industries consist of large number of sensors and controllers and it is not possible and feasible to connect everything by the means of wired communication. Hence the need of wireless communication between devices is necessary and this can be achieved by the IEEE std. 802.15.4.

Keywords : ATmega16, LM35, zigbee, GUI.