Mini RS232 to RS485/422 converter for OMRON PLC or touch panel. Compatible with and replacement of OMRON CJ1W-CIF11 and NS-AL002; Smaller size; More beautiful and classy when installed on PLC or touch screen. No external power supply required; No dip switch required to select the working mode; Non-isolated surge protection; Baud rate: 0-230Kbps, self-adaptive; Provided with terminal resistance setting switch; With communication indicator; Maximum communication distance: 1200m; Support multi-point communication.