Web services currently dominate not only home computing but also cell phones by offering permanent access to the Internet. The technologies that combine computing and automation are constantly evolving. Indeed, web browsing is becoming so easy that it remains quite important to make it benefit the automation controls. Thus, industries are currently investigating web functionalities by exploiting new programmable automatons embedding a web server allowing access to web pages. This book is a study allowing the realization of a mobile application under Android for the regulation of redox in a water basin.