This adapter is able to convert RS-232 signal to RS-485 balanced differential signal and extend the communication distance to 1.2km. It is passive and doesn't require external power.
Converts RS-232 TXD and RXD signal to 2 lines equalized half duplex RS-485 signal.
Requires no external power supply.
Auto flow control, do not need to set manually.
Easy to install and use.
Serial Port Feature: Concurrently compatible with RS-232C, RS-485 standard of EIA/TIA
Electric Port: DB9 hole interface of RS-232,DB9 pin connector of RS-485, compatible with post (5 connection)
Work Mode: Asynchronous Half Duplex
Transmission Media: Common Wire, UTP or STP
Transmission Speed: 300-115200BPS
Transmission Range: 5m (RS-232) 1200m(RS-485)
Telecommunication Protocol: Transparent.
Work Environment: -10°C - 85°C, 5% - 95% RH
Signals: RS-232:TXD,RXD,RTS,CTS,DTR,DSR,DCD,GND, RS-485: Date+, Date-, GND