xG28S-EK2705A Development and Evaluation Kit

Build and test IoT applications that connect to Amazon Sidewalk with the Silicon Labs xG28S-EK2705A kit

Image of Silicon Labs xG28S-EK2705A Development and Evaluation Kit The xG28S-EK2705A Explorer Kit is a compact, cost-effective development and evaluation platform designed by Silicon Labs for the EFR32SG28 dual-band wireless system on chip (SoC). Its primary purpose is to enable rapid prototyping and demonstration of IoT applications that connect to Amazon Sidewalk, a low-bandwidth, long-range wireless network developed by Amazon. The board comes preprogrammed with an out of the box application that is ready to connect to the Amazon Sidewalk network, enabling demonstration of uplink and downlink over the Amazon Sidewalk network between the end device and the cloud.

Additional Amazon Sidewalk tools include SoC and Pro Kit. The EFR32SG28 secure, low-power, dual-band SoC for Amazon Sidewalk devices supports Bluetooth® Low Energy (LE) and sub-GHz FSK. It provides reliable connectivity in the home using Bluetooth LE and extends it beyond the front door using sub-GHz FSK to cover detached buildings, pools, and spas. The KG100S-PK6130A Pro Kit from Silicon Labs is designed to support the development of wireless IoT devices, offering compatibility with Bluetooth, FSK, and CSS protocols. The kit is built around the KG100S module and is intended for developers looking to create scalable, high-volume IoT applications for Amazon Sidewalk.

Features
  • Based on EFR32xG28, 1024 kB Flash and 256 kB RAM
  • Two LEDs and two push buttons
  • Reset button
  • USB connector for power and debug connection
  • On-board SEGGER J-Link debugger
  • Virtual COM port
  • Packet Trace Interface (PTI)
  • Breakout pads for GPIO access and connection to external hardware
  • Third-party add-on connectors
    • mikroBUS™ socket
    • Qwiic® connector
  • Programmed with the Amazon Sidewalk out of the box application

xG28S-EK2705A Development and Evaluation Kits

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
XG28 EXPLORER KIT AMAZONSIDEWALKXG28S-EK2705AXG28 EXPLORER KIT AMAZONSIDEWALK15 - Immediate$26.32View Details
PRO KIT FOR AMAZON SIDEWALKKG100S-PK6130APRO KIT FOR AMAZON SIDEWALK6 - Immediate$185.82View Details

Amazon Sidewalk SoC

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC RF TXRX+MCU BLE 48QFNEFR32SG28B320F1024IM48-AIC RF TXRX+MCU BLE 48QFN490 - Immediate$5.02View Details
IC RF TXRX+MCU BLE 68QFNEFR32SG28B320F1024IM68-AIC RF TXRX+MCU BLE 68QFN520 - Immediate$5.24View Details
IC RF TXRX+MCU BLE 68QFNEFR32SG28B322F1024IM68-AIC RF TXRX+MCU BLE 68QFN518 - Immediate$5.54View Details
IC RF TXRX+MCU BLE 48QFNEFR32SG28B322F1024IM48-AIC RF TXRX+MCU BLE 48QFN435 - Immediate$6.66View Details
Published: 2025-07-21