Specifications:

• Good solution for the communication between serial port and RS485 or RS422 device
• Serial port feature: concurrently compatible with RS-232C, RS-485 standard of EIA/TIA.
  
• Electric interface: DB9 hole interface of RS-232 end, DB9 pin connector of RS-485 end, compatible with post (5 connection).
  
• Work methods: asynchronous half duplex.
  
• Transmission media: common wire, double wire or UTP or shielding line.
  
• Transmission speed: 300~115~21BDS.
  
• Transmission distance: 5 meters(RS-232 end) 1.200 meters(RS-485 end).
  
• RS232 Adapter work environment: -20 degree C to 85 degree C, relative humidity: 5% to 95%.
  
• Unique serial charge pump drive technology, no external power supply, the real three-wire communication (TXD,RXD,GND). No need serial port initialization
• Support baud rates up to 115.2 Kbps; Automatic sense serial signal rate
• Support a connection distance up to 4000ft (1200m)
• RS485 Converter signals: D+/A D-/B GND +5V-12V
• It is suitable for most applications, including industrial, commercial and any general office computer device.