The Patton Model 1009 and 1015 support async, point-to-point, RS-232, communication over two twisted pairs. They are designed to plug into DB-9 and DB-15 interfaces (respectfully), and are both compatible with the Patton Model 1000. For between-building applications, use our transformer isolated Models 1016 and 1019. These two short hauls are compatible with the Patton Model 1010.
 

Transmission Format: Asynchronous
Data Rate: 0 to 19,200 bps (no strapping)
Control Signal: CTS (Pin 8) turns ON immediately after the terminal raises RTS (Pin 7); DSR (Pin 6) and DCD (Pin 1) turn ON immediately after the terminal raises DTR (Pin 4)
Transmit Line: 4 wire, unconditioned line (2 twisted pair)
Transmit Mode: Full duplex, 4-wire Transmit Level: 0 dBm
Line Connection: RJ-11 or RJ-45 jack or 5 screw terminal posts (4 wires and 1 ground) and a strain relief insert; works well with data signals only
Transformer Isolation: 1500W (Models 1019 and 1016)
Surge Protection: 600W power dissipation for up to 1 msec (Model 1009S only)
Power: None required, uses ultra low power from EIA data and control signals
Dimensions: 2.50" x 1.2" x .75"