SIMATIC RTU3041C compact low-power RTU, battery or solar powered, connection for external power supply 10.8V to 28.8V DC, integrated modem for LTE-M/NB-IoT, GPS, connection to TeleControl Server Basic, loadable protocols: DNP3, IEC 60870-5-104, SINAUT ST7 or MQTT, onboard I/Os: 8 DI, 8 DO, 4AI, FTP client, Ethernet port, configuration/diagnosis via web server, time synchronization, SMS, e-mail, SD card slot. Please note country approvals! ... Power supply 10.8V to 28.8V DC, integrated modem for LTE-M/NB-IoT, GPS, connection to TeleControl Server Basic, loadable protocols: DNP3, IEC 60870-5-104, SINAU T ST7 or MQTT, onboard I/Os: 8 DI, 8 DO, 4AI, FTP client, Ethernet port, configuration/diagnosis via web server, time synchronization, SMS, email, SD card slot. Please note country approvals!