Specification: Item Type: Isolated Converter Material: ABS, PCB Uses: Industrial Automation Control System, All-in-One Card, Access Control System, Parking Lot System, Etc. Working Voltage: DC 12-24V Plug Specification: US Plug AC100?220V Transmission Mode: Asynchronous Half Duplex Transmission Rate: 300BPS-115200BPS Interface Protocol: Compatible with EIA/TIA RS232C/RS485/RS422 Electrical Interface: RS232 Port DB9 Hole Type RS485/422 Port DB9 PIN Type (6PIN Adapter Board Required) Transmission Medium: Twisted Pair, Shielded Wire Package List: 1 x Isolated Converter 1 x Adapter Board 1 x Connection Line 1 x Power Adapter Note: 1. Do not place the product in an environment that is too corrosive, humid and high temperature 2. Please supply power according to the use voltage, using other voltages may cause fire and product damage