1.USB 2.0 full-speed mode 2.Vitural Com Port on PC, easy to use with TTL interface system 3.Power, TD, RD status LED indictors 4.Compact size and light weight (18g), no external power required 5.Speed up to 921.6K bps - Update: 2011-11-06

1.USB 2.0 full-speed mode 2.Vitural Com Port on PC, easy to use with Current Loop interface system 3.Power, TD, RD status LED indictors 4.Full/Half duplex communication, Active/Passive selectable 5.Compact size and light weight (18g), no extern... - Update: 2011-11-06

1.USB 2.0 full-speed mode 2.Vitural Com Port, easy to use 3.RS-485 2 wires/HALF DUPLEX point to point or multi-drops 4.RS-422 4 wires/FULL DUPLEX point to point or RS-485 FULL DUPLEX multi-drops 5.Compact size and light weight (18g), no externa... - Update: 2011-11-06

1.RS-485 half duplex (2 wires) RS-422 full duplex 4 wires 2.RS-485 terminal resistor select ?On? or ?Off?. 3.RS-485 with ADDC circuit (Auto Data Direction Control). 4.No speed limits. 5.No time delay when data transfer from RS-485 to RS-422 or R... - Update: 2011-11-06

1.Non external power needed 2.Implements low cost LAN, supports 32 users 3.User selectable HALF or FULL duplex for RS-485 4.Contention control of RS-485 transmitter and receiver 5.DTE/DCE compatible 6.Data rates up 120K bps - Update: 2011-11-06

1.Non external power needed 2.TX active/passive, RX active/passive loops selectable 3.DTE/DCE selectable 4.Half (2 wires) and Full (4 wires) duplex wiring 5.Data Optically Isolated 6.Data rates up to 19.2K bps - Update: 2011-11-06

1.Non external power needed, Automatic data direction control (ADDC) 2.User selectable HALF or FULL duplex for RS-485 3.DCE compatible 4.Data rates up to 64Kbps ,Half duplex up to 38.4Kbps 5.No speed limits, No CPU inside, No time delay when Tx t... - Update: 2011-11-06