Small BQB BLE 5.1 Bluetooth Data Module - MY-BC204


MY-BC204 is a compact Bluetooth data module that supports BLE 5.1 and has obtained BQB certification. It offers support for Bluetooth profiles such as GATT, ATT, HID, and GAP.

Communication with MY-BC204 is facilitated through UART, and it offers AT command support for setting Bluetooth name, baud rate, and other configurable parameters. OTA upgrade is also supported by MY-BC204.

MY-BC204 offers firmware support for Central/Peripheral and multi-connection modes, allowing for programming via serial port tools or mobile apps

MY-BC204 Parameter:

Bluetooth Model MY-BC204
Bluetooth Version Bluetooth 5.1 Low Energy
Profiles GATT(Central/Peripheral)
Dimension 10mm*16mm*2mm
Interface PIO, SPI, UART
Communication Mode  AT Command Mode, Throughput Mode
Work temperature -40ºC to +80ºC
Transmit power maximum 8 dBm
Antenna Built-in PCB Antenna (Default), supports external antenna (Optional)
Certificate BQB certificate


MY-BC204 Features:

  • Bluetooth 5.1 5.0 4.2/4.1/4.0
  • Cheapest Price Bluetooth Module
  • Master-Slave firmware
  • Multi-Connection
  • Bluetooth Low Energy Protocols
  • Extensible Feature: HID
  • Programmable Baud-Rate (Up to 921600bps)
  • The default UART Baud rate is 115200bps
  • Customized Firmware
  • Over-The-Air (OTA) Firmware Updates
  • Support serial port upgrade


MY-BC204 Application:


Download Product Specification:

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