RS-423
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RS-423, also known as TIA/EIA-423, is a technical standard originated by the Electronic Industries Alliance that specifies electrical characteristics of a digital signaling circuit. Although it was originally intended as a successor to RS-232C... Wikipedia
Standard: EIA RS-423
Connector types: Not specified
Mark(1): -4V to -6V
Maximum Baud Rate: Up to 100kbit/s
Maximum Devices: 10 (1 driver & 10 receivers)
Maximum Distance: 1200 meters (4000 feet)
Mode of Operation: Single-ended (unbalanced)