With the Simatic RTU3030C, Siemens is expanding its range of telecontrol stations (Remote Terminal Units/RTU) with a compact telecontrol unit with a self-sufficient power supply. It can be used to monitor measuring points in widely distributed systems independently of an existing power supply and without a wired communication infrastructure. Users have access to process data such as level, flow, fill level, temperature or pressure via mobile radio. The RTU can be operated with a maximum of two industrial batteries or via a rechargeable battery (can be combined with a solar panel). If required, users can also use a 12 to 24 V DC power source. The power supply options can be combined as required. The telecontrol station can be operated in sleep, update, communication and service mode. In sleep mode, the power requirement is less than 2 mW. Measured values are transmitted to the control center using the integrated UMTS modem via the mobile network - with a secure OpenVPN connection or encrypted e-mails. Communication can be time or event-controlled and can be configured individually for each process value. Exceedances of defined threshold values are reported immediately, even in sleep mode. The device works under harsh environmental conditions at temperatures from -40 to +70 °C. Users can configure the telecontrol unit using a standard web browser and update the firmware. It can also be connected to the 'Simatic PCS 7' or 'Simatic WinCC' control system via the 'TeleControl Server Basic' software package. Direct connection to 'Simatic PCS 7 TeleControl' or 'Simatic WinCC/TeleControl' is also possible via the telecontrol protocols IEC 60870-5-104 and DNP3.