The development of public data transmission systems allow you to change the structures of automation, the increased mobility of use and immediate response to emergency incidents occurred and reports. Telemetry is direct, remote access to information resources of the automation systems, measurement systems, controllers, actuators and other components of the supervisory processes. Obtained data can be stored locally in memory of data loggers and provided by the integrated web servers, or transmitted cyclically or by event to hosting centers and made ​​available to customers via a dedicated channel of information technology. Both methods and data maintenance have advantages and influence on their price. The first one allows you to increase the role of local controllers, precise collection and analysis of historical information about controlled objects, the second is more attractive for access to the measurement data if object is not supported by local controllers.