EFR32xG21 Bluetooth Starter Kit


The EFR32xG21 Bluetooth Starter Kit supports Bluetooth 5.1 and comes ready to connect to your phone via the Silicon Labs Bluetooth LE mobile app.  The EFR32xG21 2.4 GHz wireless SOC is optimized for line-powered BLE and Bluetooth mesh applications, including connected lighting, smart plugs, gateways and voice assistants.

Based on Silicon Labs EFR32xG21 2.4GHz SoC with 1024K of Flash and an 80MHz Cortex M33 MCU, the 10dBm Radio Board plugs directly into the Wireless Starter Kit Mainboard which that provides for easy evaluation and development of wireless applications.

Our software suite, Simplicity Studio, provides one-click access to design tools, documentation, software and support resources for Bluetooth development. Get up and running quickly with precompiled demos, application notes and examples. Use advanced tools including energy profiling and network analysis to optimize your wireless systems.

Buy Now $99

Hardware and Software Features

Kit Contents

  • 1 x Wireless starter kit mainboard
  • 1 x EFR32MG21 2.4 GHz +10 dBm radio board
  • Cables
  • EFR32MG Getting Started Card

Main Board Features

  • Modular design supports different radio boards
  • Expansion header allows easy expansion
  • Integrated debug
  • 2x push buttons
  • 2x color LEDs
  • Packet Trace support on both Ethernet and USB connections
  • Coin cell support
  • Supports AEM (Advanced Energy Monitor) for battery measurement and Energy Profiler

Radio Board Features

  • Based on EFR32xG21 with a Cortex M33 MCU, 1024 K of Flash and 96 kB of RAM
  • 2.4 GHz radio supporting up to +10 dBm output power
  • Inverted-F PCB antenna

Simplicity Studio Features

  • AppBuilder
  • Hardware Configurator
  • Energy Profiler
  • Network Analyzer

EFR32xG21 Compatible Radio Boards

Radio Board User Guide Included Device Output Power (dBm) Flash (kB) RAM (kB) Zigbee/Thread Bluetooth Mesh Bluetooth 5.1 Price (USD) Add to Cart
SLWRB4180A EFR32MG21A020F1024IM32 +20 1024 96 Yes Yes Yes $49 SLWRB4180A Radio Board
SLWRB4181A EFR32MG21A010F1024IM32 +10 1024 96 Yes Yes Yes $49 SLWRB4181A Radio Board
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