Advantech ADAM-4520 RS232-RS422/485 Converter Open Box (B438)
Status LEDs for monitoring link / activity. Input power: 10 to 30 V DC. Surge protection on RS-485 line. Isolation: 3,000 VDC galvanic isolation between input and output. Interface: RS-232 (DB9 female) to RS-422 / RS-485 differential line.