Description :Serial Protocol: RS485 / RS422Specification: USB 2.0; EIA/TIA RS485 and RS422 standardChip: Max Baud Rate: 921600bpsMax Distance (RS485/422 End): 984ft (300m) at 921600bps, 1968ft (600m) at 38400bps, 3937ft (1.2km) at 9600bps;USB-bus powered, no external needed.Automatic hand-shaking protocol supported.Item Length: 1.5 FeetImportant Note:The USB end must be connected to PC or . Other USB devices like digital camera, scanner and printer is not allowed.To avoid reflections on cables it is necessary to appropriate termination resitors (120, 1/4W).Please do NOT the adapter to RS422/ RS485 device until you install the driver on your computer or .4 Kinds of Working Modes: Asynchronous to / four wires full duplex; to multiple / four wires full duplex; to / two wires half duplex; to multiple / two wires half duplex.Applications:Factory automation systemDistributed control systemLED INFO display equipmentPLC control and management managementSCADA(Supervisory control and data acquisition) treatment/medication automationBuilding automationCheck on work attendanceHuman resource management.Measuring instruments and monitoring systemData collectionProcess contromaterial: plasticColor as shownPackage Contents:1 x USB to Serial Converter Cord1 x RS422 RS485 Serial DB9 to Terminal Block AdapterOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Please allow slight errors due to manual measurement. Please make sure you don't mind before bidding. Color may vary depending on your monitor, please understand. Note: Hello, please pay attention to your shipping address when purchasing products. If your delivery information (e.g. name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly