1.Small size for easy installation 2.Real ... interface and versatile mode GQ-SPS04 4-port RS-232/422/485 Serial- to- Ethernet Device ServersIntroduction GQ-SPS04 device ... to 75°C (-4 to 167°F) Ambient Relative Humidity: 5 to 95% Power RequirementsData Bits: 5, 6, 7, 8 Stop Bits: 1, 1 ... .5, 2 Parity: None, Even, Odd, Space, Mark Flow Control: RTS/CTS , XON/XOFF Baudrate: 50-460800bpsInput Voltage: 12 to ...