I-7523D_DESCRIPTION.html
I-7523D - Intelligent Communication Controller with one RS-485 port, two RS-232 ports, and one RS-232/RS/485 port
I-7523D.html
I-7523D - Embedded Communication Controller with one RS-485 port, two RS-232 ports, and one RS-232/RS-485 port and Display. Supports operating temperatures between -25 to 75C.