Modbus Gateway Dimensions W x H x D: 103 x 157 x 36 mm Operating temperature: 0...+60 °C Transfer rate: 50...921.6 kbps (RS-232/422/485) Ethernet Connection: 1x 10/100 RJ45 Ethernet Speed: Fast Ethernet (10/100 Mbit/s) Protection rating: IP30 Serial connections: 4x RS232/422/485 Operating voltage: 12...48 VDC Overvoltage protection: 15 kV