![4-port Serial Interface, Modular, With/without Optical Isolation, 3.3V/5V, With 9-pin Connectors](https://d27wgn5g4t3wja.cloudfront.net/img/87cc2d4f-3f9a-49a6-9f0a-4dad0edfa67e/358440.png)
4-port Serial Interface, Modular, With/without Optical Isolation, 3.3V/5V, With 9-pin Connectors
APCI-7500-3/4C - TEAM SOLUTIONS, INC. (TSI)
*This model has 4x 9-pin D-Sub male connectors on 2 brackets
*RS232, RS422, RS485, 20 mA Current Loop
*Modular structure through SI modules
*With or without optical isolation
*Mode configuration free for each port
*128-byte FIFO-buffer, common interrupt
*Transfer rate programmable up to 115,200 Baud
*Option: up to 1 MBaud for RS485 and RS422
*Automatic direction recognition for RS48
*Mode: configurable RS232, RS422, RS485, 20 mA Current Loop (active, passive) with or without isolation (SI modules)
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