WF121 is a stand-alone Wi-Fi module providing fully integrated 2.4GHz 802.11 b/g/n radio and a 32-bit microcontroller (MCU) platform for embedded applications requiring simple, low-cost and low-power wireless TCP/IP connectivity, also providing flexible interfaces for connecting to various peripherals.
WF121 allows end user applications to be embedded onto the on-board 32-bit microcontroller using a simple Bluegiga BGScriptTM scripting language - without the need for additional MCU. WF121 can also be used in modem-like mode in applications where the external MCU is needed.
With an integrated 802.11 radio, antenna, single power supply, and regulatory certifications, WF121 provides a low-risk and fast time-to-market for applications requiring Wi-Fi connectivity.
  • Small, stand-alone 802.11 b/g/n module with radio, antenna and 32-bit MCU
  • Long range provided by excellent radio performance
  • Embedded TCP/IP and 802.11 MAC stacks
  • On-board end user applications enabled by Bluegiga BGScriptTM
  • Industrial specifications, long life time and future proof solution
  • Regulatory qualifications reducing R&D risk, costs and time-to-market


  • IEEE 802.11 b/g/n radio:
  • Single 2.4 GHz band
  • Symbol rate up to 72.2Mbps
  • Integrated antenna or U.FL connector
  • Excellent radio performance:
  • TX power: +17 dBm
  • RX sensitivity: -97 dBm
  • Host interfaces: UART, USB or SPI
  • Peripheral interfaces:
  • GPIO, AIO, and timers
  • I2C, SPI and UART
  • Embedded TCP/IP stack on 802.11 MAC:
  • IP, TCP and UDP
  • DHCP and DNS protocols
  • HTTP server
  • 802.11 features:
  • Client (STA) mode support
  • Access Point (AP) mode support up to five clients
  • Client (STA) mode support:
  • 32-bit embedded microcontroller:
  • 80Mhz, 128kB RAM and 512kB Flash
  • MIPS architecture
  • Bluegiga BGScriptTM scripting language for stand-alone applications
  • Temperature range: -40C - +85C
  • Dimensions: 15.4 x 26.2 x 2.1 mm
  • CE, FCC and IC qualified

WF121 Resources

Bluegiga Comparison Chart
Bluegiga Wi-Fi Comparison Chart

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