ITEM NAME:Premium RS232 to RS485 Serial Serial Ports Converter Adapter Mini Design Description: - Professional RS232 to RS485/RS422 converter. Connecting any RS485 or RS422 device directly to COM port. - Serial charge pump drive technology, no external power supply, the real three-wire communication (TXD,RXD,GND). - No need serial port initialization; automatic sense serial signal rate. - Transmission distance: RS422 maximum 1200m (4000Ft), RS232 maximum 15m(50Ft). - Support Mac OS, Windows 95/98/2000/2003/XP/Vista, Win 7/8, etc. Specification: - Material: Plastic&Metal - Size: 60x30x15mm/2.36x1.18x0.59inch Package Included: 1 Piece Adapter Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. SKU: QVW0019882263017212.Professional RS232 to RS485/RS422 converter. Connecting any RS485 or RS422 device directly to COM port. - Transmission distance: RS422 maximum 1200m (4000Ft), RS232 maximum 15m(50Ft). - No need serial port initialization; automatic sense serial signal rate.