The WiFly RN-111B module is a complete, ultra low power embedded TCP/IP solution.  The device enables wireless connections to any legacy serial port and supports TTL 3.3VDC signaling at a rate of up to 921Kbps over the UART interface.  Just attach to the UART of your embedded microprocessor or level shift your RS232 signals, and you're connected.  The transmit range can be up to 330' (100m), depending upon environmental considerations.

The RN-111B can be powered from multiple supply options:  4VDC-12VDC unregulated, 3.3V regulated, or low power (2-3V) battery source.  It also uses industry standard 802.11b specifications and protocols.

There are many ways to utilize the RN-111B module.  It opens connection to a remote port on a remote server, it listens and accepts connections from a remote IP host, and it wakes and broadcasts via UDP (It also receives UDP). 

The RN-111B is available in four different configurations.  The RN-111B-E (pictured) has an SMA jack, the RN-111B-R has a reverse polarity SMA jack, the RN-111B-S has a chip antenna, and the RN-111B-W has a wire antenna.

Developers will want to use the RN-111B-EVAL evaluation board for prototyping and designing their WiFly systems.  It contains all hardware and software components required to configure and setup Roving Networks' WiFly 802.11 modules.

• Fully pre-certified module with FCC ID and CE marks
• TCP sockets with incoming and outbound connect modes
  
• UDP connectionless and broadcast modes
  
• Hardware UART interface
  
• Virtual COM support via free PC Client
  
• Ultra low power usage (40mA idle/RX, 120mA TX, 12uA sleep)
• Programmable timers and wake/trigger modes
• Multiple antenna options: SMA, Reverse SMA, Chip, and Wire
  
• 3 on-board LEDs and PIO signals for connect status
  
• Up to 8 sensor inputs for sleep, wake, and data ACQ
  
• Full hardware flow control via (RTS/CTS)
  
• UART baud rates from 1200 to 921Kbps
  
• Supports RFC2217 remote signaling (DTR, DSR, CD)
  
• Simple local configuration via AT commands
  
• FTP client for wireless firmware upgrades