RS-232 to RS-485 Adapter Interface Converter
Model: NA-101A - Plastic case material - Compatible with RS-485 and RS-232C of EIA/TIA standards - Working mode: Asynchronous half-duplex differential transmission - Transmission media: Twisted-pair or shielded twisted pair - Data Transfer Rate: 300~115200bps - Operating Distance: 1200m for RS485 5m for RS232 - Comes with Chinese manual