WDG-2S- Dual-Port Isolated RS-422/485

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Watchdog timer to monitor computer systems
Two Optically-Isolated RS-422/485 Serial Comunication Ports
Computer power supply voltage and temperature monitors
LED status monitors on transmit and receive lines for troubleshooting
Spare 16-bit counter timer
This multifunction card contains a watchdog timer, two RS422/485 serial communications ports, and an internal temperature monitor and computer voltage monitor. This is a full-length card that installs in "long" expansion slots of IBM PC/XT/AT and compatible computers. The following paragraphs describe functions provided.

Article from ACCES I/O Products, Inc.

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