NanoH2 is an ultra-compact ESP32-H2 board with IEEE 802.15.4 wireless support for Zigbee, Thread and Matter, plus secure boot and Flash encryption. It includes Grove expansion, USB-C, RGB/IR hardware and a user button for low-power IoT builds. The NanoH2 is an ultra-compact IoT development board in the M5Stack development kit series, built around the ESP32-H2FH4S SoC. It includes hardware security features such as secure boot and Flash encryption, making it a strong option for connected devices where security matters. The board integrates IEEE 802.15.4 wireless communication and supports Zigbee, Thread, and Matter interoperability protocols based on Thread. This makes it well suited for moThe Pi Hutdern low-power wireless networks and smart home ecosystems. Despite its small size, NanoH2 includes a useful set of onboard hardware: an LED, IR infrared transmitter, RGB LED, Grove interface, USB Type-C, and a user button. The Grove port allows easy expansion with a wide range of M5Stack modules, giving developers plenty of options for adding sensors, actuators, and other peripherals. NanoH2 is ideal for lightweight IoT projects that need low power and flexible connectivity. It can be used in smart home systems, industrial control, low-power wireless communication nodes, and the development of compact IoT terminals based on IEEE 802.15.2. Features Supports Zigbee and Thread, Matter wireless protocols Built-in LED, IR infrared transmitter, and RGB Equipped with a Grove port, supporting multiple peripheral expansions USB Type-C interface for power supply and programming Compact size Development Platform Arduino ESP-IDF Specifications SoC ESP32-H2FH4S@RISC-V 32-bit single-core, up to 96 MHz Flash 4MB RGB WS2812 Communication Protocol IEEE 805.15.4 (including Zigbee 3.0, Thread 1.4, Matter) OpenThread Range Maximum distance 225m, packet loss rate 0% IR Remote Parameters IR transmission distance at 0: 395CMIR transmission distance at 45: 70CMIR transmission distance at 90: 10CM Grove Max Load DC 4.43V@2A (5 min, 25.2) Operating Power IEEE 805.15.4 wireless: TX: DC [email protected] / RX: DC [email protected] remote: DC [email protected] (white): DC [email protected]: DC [email protected] (max brightness) Product Size 23.5 x 12.0 x 9.5mm Product Weight 3.7g Resources Documents Package Contents 1x NanoH2