... RS485 signal, Port-powered, Support 2500V isolation, no power supply needed. 1, Plug and play, small volume, easy installation 2, Port-powered, high ... 5% to 95% Input powered: No power supply needed, powered from TXD, RTS, DTR signal in RS-232 port Consumption: Static consumption less than ... *33mm*16.5mm Shell: Plastic Color: Black Weight: 50g RS-232/485 Converter(Industrial Port-Powered Isolation )