Chain Buzzer

SKU:U224

Description

Chain Buzzer is a buzzer output node in the M5Stack Chain series. It features a built-in buzzer and programmable RGB LED, making it suitable for audible notifications, status alerts, smart home alarms, and other applications. It integrates an STM32G031G8U6 core MCU and uses a UART serial daisy-chain communication protocol. Two HY2.0-4P expansion ports allow additional Chain series devices to be connected, enabling richer audio-visual interactive applications.

Features

M5Stack Chain series
Buzzer audio output
STM32G031G8U6 core MCU
1 x RGB LED
UART serial daisy-chain communication protocol
2 x HY2.0-4P expansion ports for connecting Chain series devices

Includes

1 x Chain Buzzer
1 x Chain Bridge

Applications

Audible notifications
Device status alerts
Smart home alarms

Specifications

Specification	Parameter
MCU	STM32G031G8U6
Input Power	DC 5V
Communication	UART 115200bps@8N1
Interface	2 x HY2.0-4P
Buzzer	MLT-5020
RGB LED	1 x WS2812C
Working Power	5V@198.3mA (buzzer duty cycle 50%, frequency 9.9kHz)
Working Temp	0 ~ 40°C
Product Size	23.9 x 23.9 x 16.0mm
Product Weight	5.9g
Package Size	138.0 x 93.0 x 17.0mm
Gross Weight	9.2g

Learn

Use the Chain Bridge connector to connect the main controller Chain DualKey and each Chain series device. Pay attention to the orientation when connecting: the triangular arrow should point outward from the main controller Chain DualKey, as shown below: