SIMATIC RTU3030C compact low-power RTU; Operated with battery or solar-operated; connection ext. power supply 10.8 V to 28.8 V DC; integrated UMTS modem; Connection to TeleControl Server Basic; DNP3- IEC 60870-5-104 and SINAUT ST7 protocols, onboard I/Os: 8 DI, 4 DO, 4 AI; FTP-Client; Ethernet-port, configuration / Diagnostics via web server, time-of-day synchronization, SMS, Email, SD card slot, observe national approvals!