Model 2002E Simplex serial Interface
Model 2022E Multiplex serial Interface

• Full-duplex, asynchronous data stream RS-232-C, RS-422-A, configured DTE
  Stop and parity bits selectable
  110-19,200 baud rate
• Three Operating Modes:
  Mode 1 Direct Single Report upon read
  Mode 2 Polled for read data
  Mode 3 Direct Multiple Report upon read
• Buffered read storage:
  4 readings for the 2002E, 2 reading for the 2022E
• Protocols and modes selectable through commands or via pins and shunts on PCB
• Many other commands available
• Connectors DB-25S, DIN 41612 Type C
• Control Signals DSR, CTS, DTR
• Compatible to all Readers, wired via twisted pair
• Temperature range: -40 to +55 degrees C operating
  -55 to +85 degrees C non-operating
• Power: 2002E = 5VDC (+/-5%) @ 250 mA maximum
  2022E = 5VDC (+/-5%) @ 350 mA maximum
• CRC algorithm allows 1 in 10 to the 14th errors