1The interface is compatible with EIA / TIA RS232C, RS485 / RS422 standards, so choosing a compatible interface is a prerequisite for use. 2Electrical interface classification, RS232C interface DB9 female connector, RS485 / RS422 interface DB9 female and RJ45. 3The connector is equipped with a 6 position terminal block, and the transmission speed is fast, its transmission speed can attain 300115.2Kbps. 4There are certain requirements for the use environment, you need to be in an environment of 0 to 50 to use it. 5Note, this product must be able to work with a power supply, and supports US voltage 100 to 240V. Item Type: Data Converter Material: PVC+Aluminum Alloy Interface Characteristics: Compatible with EIA/TIA's RS-232c, RS-485 / RS-422 Standards; Electrical Interface: RS-232 End DB9 Type Connector, RS-485 End DB9 Pin Type Connector, with Terminal; Working Mode: Asynchronous Half-duplex Differential Transmission; Transmission Medium: Twisted Pair or Shielded Wire; Transmission Rate: 300-115.2Kbps Use Environment: 0 to 50 Relative Temperature: 5% to 95% Transmission Distance: 0-1800 Meters Remarks: This Product Needs to Be Powered to Work. Voltage: 100-240V Specification: US 1 xData Converter 1 xPower Line 1 xPatch Cord 1 x6 Position Terminal Block