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RN131C WiFly 802.11 b/g Ultra-low power, surface mount module with integrated antenna

RN131C WiFly 802.11 b/g Ultra-low power, surface mount module with integrated antenna

Your Price: $39.00
Out of Stock
Part Number:WRL-0013


The RN131C is a complete, ultra-low power embedded TCP/IP solution. 

The combination of ultra-low power and the ability to wake up, connect to a wireless network, send data, and return to sleep mode in less than 100 milliseconds, allows the RN131C to run for years on two standard AAA batteries.  Using only 35mA when awake and 4µA when asleep, this remarkable power efficiency makes possible a new class of internet-enabled products.

The RN131C is a complete solution as it incorporates a 2.4 GHz radio, processor, TCP/IP stack, real-time clock, crypto accelerator, power management, and analog sensor interfaces.  The module is pre-loaded with software to simplify integration and minimize development time for applications.  In the simplest configuration, the hardware only requires four connections (PWR, TX, RX, GND) to create a wireless data connection.

The RN131C has all the features and capabilities of the RN131G, but is rated for commercial temperature (0C to +70C). 

For the developer, Roving offers an evaluation board based on the RN131, the RN-131-EK.  This easy-to-use kit quickly adds Wi-Fi connectivity to embedded applications.  For those using the Microchip development ecosystem, the RN-131-PICtail works seamlessly with Microchip's PIC18 Explorer and Explorer 16 development boards.  The RN-131-PICtail plugs into the PICtail™ modular connector on the PIC18 Explorer Board and the PICtail Plus connector on the Explorer 16, adding wireless functionality to the microcontroller.  

Click here for the latest firmware


  • Full onboard TCP/IP stack (no external drivers required)
  • Ultra-low power design for battery powered applications
  • Fixed transmit power: +18dBm
  • Hardware interface: UART and SPI slave
  • Supports SoftAP and Infrastructure networking modes
  • User programmable GPIO & ADCs
  • Real-time clock for time-stamping, auto-sleep, and auto-wakeup modes
  • Runs directly from batteries (onboard battery boost circuit) or regulated power supply
  • Configuration over serial or wireless interface using simple ASCII commands
  • Over the air firmware upgrade via client FTP
  • Secure Wi-Fi authentication schemes:  WEP / WPA / WPA2 / EAP (in WiFly 4.0)
  • Supports Wi-Fi Protected Setup (WPS)



  • Remote equipment monitoring
  • Asset tracking and telemetry
  • Security
  • Industrial sensors and controls
  • Home automation
  • Medical devices


Networking Standards

IEEE 802.11 b/g

Over-the-Air Data rates

802.11 b: 1,2, 5.5,11 Mbps : 802.11 g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps

Frequency Band

2.412 - 2.484 GHz


802.11 b: DSSS(CCK-11, CCK-5.5, DQPSK-2, DBPSK-1): 802.11g : OFDM

Wi-Fi security



DHCP, DNS, ARP, ICMP, FTP client, HTTP client, TCP, UDP

Supply voltage

3.3V ±10%

Output power


Power consumption

4µA sleep, 35mA active RX, 210mA TX

Serial Interface Data rate

464Kbps over UART, up to 1Mbps over SPI slave


Up to 300 meters in open air

Antenna options

Onboard Chip and U.FL connector


1.49" x 0.78" x 0.15" (38 x 20 x 4 mm)


0.140 oz




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