SIMATIC RTU3030C compact low-power RTU; battery or solar-operated; connection external power supply 10.8 V to 28.8 V DC; integrated UMTS modem; connection to TeleControl Server Basic; loadable protocols: DNP3, IEC 60870-5-104, SINAUT ST7 or MQTT; onboard I/Os: 8 DI, 4 DO, 4 AI; FTP client; Ethernet port, configuration / diagnostics via web server, time synchronization, SMS, email, SD card slot. Observe national approvals!