RF-Star Flash Bluetooth ZigBee 2.4 GHz Transceiver Module


  • Protocols: Matter, OpenThread, Zigbee®, Bluetooth® 5.3 Low Energy, Bluetooth Mesh, Proprietary 2.4 GHz
  • Package (mm): 23.35 × 17.0 × 2.2, half-hole, 1.27 pitch, 36-pin
  • Features: Bluetooth Mesh network, Matter, High Security
  • GPIO: 30
  • Max. TX Power: 10 dBm

RF star EFR32MG24 1.5 MB Flash BluetoothLE 5.3 ZigBee 2.4 GHz Transceiver Module RF-BM-MG24B1

RF-BM-MG24B1 and RF-BM-MG24B2 are IoT wireless connectivity modules based on Silicon Labs EFR32MG24 series SoCs. They integrate a 39 MHz crystal and a 32.768 kHz crystal, up to 1536 KB programmable flash, and 256 KB RAM, making it possible to use in many complex applications. Its 32-bit 78 MHz ARM® Cortex®-M33 core can operate at an extremely low current at flexible power modes. Its multiprotocol 2.4 GHz RF transceiver is compatible with Matter, OpenThread, Zigbee®, Bluetooth® 5.3 Low Energy, Bluetooth Mesh, and 2.4 GHz Proprietary.

It features a small size, robust connection distance, and rigid reliability. Up to an optional ten dBm or 19.5 dBm, TX power enables it to be used in long-range requirement applications. It features a small size, robust connection distance, and rigid reliability. Those modules are pin-2-pin compatible with each other.

  • Wireless SoC: 32-bit 76.8 MHz ARM® Cortex®-M33 processor
  • TX power: 10 dBm


  • -105.4 dBm sensitivity @ 250 kbps O-QPSK DSSS
  • -105.7 dBm sensitivity @ 125 kbps GFSK
  • -97.6 dBm sensitivity @ 1 Mbps GFSK
  • -94.8 dBm sensitivity @ 2 Mbps GFSK


  • 1536 KB programmable flash
  • 256 KB of RAM


  • Matter
  • OpenThread
  • Zigbee®
  • Bluetooth® 5.3 Low Energy
  • Bluetooth Mesh
  • Proprietary 2.4 GHz

Operating Range

  • Supply voltage range: 2.2 V ~ 3.8 V (DC-DC mode), 1.8 V ~ 3.8 V (Bypass mode), 3.3 V is recommended.
  • Operating Temperature: -40 °C ~ +85 °C

Rich Peripherals

  • 30 GPIOs
  • Analog to Digital Converter
  • Analog Comparator
  • Digital to Analog Converter
  • DMA
  • PRS
  • I2C
  • RTC
  • I2C
  • RTC
  • Watchdog
  • PWM


  • Gateway and hubs
  • Sensors
  • Smark Lighting
  • Switches
  • Location services
  • Wireless healthcare applications
  • Asset tracking and management
  • Electronic Shelf Label (ESL)

Additional information

Weight 1.1 lbs
Dimensions 23.35 × 17.0 × 2.2 in

Product Datasheet and Manual

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RF-star) is a leading global provider of wireless communication modules and solutions, specializing in low-power modules for IoT, industrial, automotive, and consumer applications. With over a decade of engagement in Bluetooth and IoT communication technology and extensive expertise, we are capable of bringing reliable, convenient, secure and intelligent connectivity service to every industry, enriching smart life with a perfect wireless experience.

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Shipping costs

Region / Country State Postcode Cost
Asia Any Any $36.00
Europe Any Any $57.00
North America Any Any $42.00
Australia Any Any $48.00
South America Any Any $57.00