Product description: Gateway H2 - communication module - ESP32-H2-MINI-1 - ZigBee / Thread / Matter - for M5Core development modules - M5Stack M141
The Gateway H2 from M5Stack is a compact, stackable communication module based on the ESP32-H2-MINI-1 chip, supporting ZigBee 3.0, Thread 1.3, and Matter (Thread-based) wireless protocols. Thanks to integrated IEEE 802.15.4 communication and the ability to switch UART/SPI interfaces via DIP switches , the device is ideal for developing IoT applications with a focus on interoperability and data security. Additionally, it supports hardware encryption , making it ideal for projects requiring secure transmission. Its ability to be used in multi-module systems makes it an extremely flexible tool for professionals.
Gateway H2 - communication module - ESP32-H2-MINI-1 - ZigBee / Thread / Matter - for M5Core development modules - M5Stack M141.
Gateway H2 has a built-in hardware encryption module.
Main features of the Gateway H2 module
- ESP32-H2 : 32-bit single-core RISC-V processor clocked at up to 96 MHz
- ZigBee, Thread, and Matter Support : Compliance with the latest IoT protocols
- IEEE 802.15.4 communication : low-power wireless transmission
- 8-position DIP switch : easy to change interface and function configuration
- Hardware encryption support : data security in IoT applications
- Low power consumption : only 8.55 mA in standby mode
- Compatibility : works with UIFlow 2.0, Arduino IDE and ESP-IDF
Pinouts and compatibility with M5Stack
The Gateway H2 module uses M-Bus and can be used with M5Stack controllers (e.g., CoreS3 , Core2 , Fire v2.7 ). A DIP switch allows you to change pin functions, for example, between UART and SPI. The module shares pins with Bluetooth and WiFi functions. Connectors include RXD, TXD, SPI_MOSI, SPI_MISO, SPI_CLK, SPI_CS, and SDA/SCL. are available on a 30-pin connector, which facilitates integration in applications requiring low-power wireless communication and signal sharing with the host.
Pinout diagram.
The module is based on ESP32-H2-MINI-1.
Programming and integration
The module can be programmed using the Arduino IDE, ESP-IDF, and UIFlow 2.0 environments. With official libraries and documentation from Espressif, it's easy to create endpoints that support Matter over Thread, ZigBee gateway, and Thread Border Router . Software can be uploaded via the classic UART interface (via the ESP32 Downloader). The manufacturer also provides an SDK for the ESP-IDF platform and step-by-step guides for all supported protocols.
Gateway H2 Technical Specifications
- SoC: ESP32-H2-MINI-1 (32-bit RISC-V, 96MHz)
- Flash memory: 2 MB
- Antenna: PCB antenna on board
- Supported protocols: IEEE 802.15.4 (ZigBee 3.0, Thread 1.3, Matter)
- Power consumption (standby): 3.3 V / 8.55 mA
- Current consumption (operation): 3.3 V / 18.35 mA (Thread networking)
- DIP switch: 8-position (UART/SPI, wireless function control)
- Operating temperature: 0°C to 40°C
- Dimensions: 54 x 54 x 13.1 mm
- Weight: 11.8 g
Contents of the set
- 1x Gateway H2 Module
The Gateway H2 module is designed to work with M5Stack Core series controllers. 
