Description: OOTDTY new and high quality. Feature: With this item, it is easy to add an RS-485 to a PC RS-232. No power required, uses for TD as power source. This does not need any or for DC power. Working T-ransmission media: Twisted-pair or shielded twisted pair (STP). It uses a particular to power from RS-232 (RTS, DTR, TXD) without initializing the RS-232 series RS232 to RS485 Converter only, other accessories in the picture is not included! Specifications: Item Type: RS232 to RS485 Converter Material: PC Size: 93x32mm/3.6x1.2in Color: As shown Data Transfer Rate: 300-115200bps Operating Distance: 1200m for RS485, 5m for RS232 Environment: -10-85/14-185, 5-95% RH Quantity: 1 Pc Note: No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 RS232 to RS485 Converter