In this paper we discuss the opportunities of replacing wirelines by wireless connections in automation systems.However, there are several challenges inherently associated with these opportunities. One of the major challengesis how to select a proper wireless connection protocol that achieves at least the minimum requirements ofthe automation system. These system requirements are discussed in the paper. Some wireless communicationsystems which could be used for wireless automation are briefly revised. Finally, we discuss the applicability ofcontemporary wireless protocols for wireless automation and whether a new wireless protocol needs to be definedfor wireless automation systems. The augmentation of wireless technology to automation systems will improvethe performance of those systems and also many new applications may be defined.