Black Box RS-232 Data Sharer - concentrator

The RS-232 Data Sharers enable you to connect several RS-232 devices over one line, get transparent speeds up to 64 kbps, run sync or async, half- or full-duplex. The RS-232 Data Sharers feature antistreaming circuitry that locks out any port the instant it begins to stream. On the TL553A-R3 model hardware-prioritized scanning enables the most frequently used channels to go first.