Feature Highlights: 1. Pre-flashed with EZSP v8 – Comes ready to use with EmberZNet Serial Protocol version 8 for easy Zigbee integration. 2. Works with Home Assistant & Zigbee2MQTT – Compatible with ZHA in Home Assistant or Zigbee2MQTT (pre-alpha support). 3. Powered by EFR32MG21 + CH340E – Built on the Silicon Labs EFR32MG21 wireless chip and CH340E USB-UART bridge for stable performance. 4. Strong Signal & Compact Design – Features a 20dBm output gain with PCB antenna, housed in a durable plastic shell. 5. Supports OTA Updates – Firmware can be updated via UART (hold BOOT, press nRST, then release BOOT). 6. Plug-and-Play Setup – Default baud rate 115200; works out-of-the-box with Zigbee-compatible gateways. Product Details: This universal open-source USB dongle is built around the EFR32MG21 Series 2 wireless SoC and CH340E USB-serial controller. It arrives pre-loaded with unsigned EmberZNet 6.7.9 Zigbee NCP firmware and the standard Silabs Gecko Bootloader, so you can start using it immediately or flash custom firmware via USB. With its integrated 20dBm power amplifier and -104.5dBm receive sensitivity, it delivers a reliable, strong signal—ideal for use as a Zigbee coordinator or router. The compact plastic housing makes it portable and durable, perfect for smart home hubs or DIY gateway projects. Specifications: - Chipset: EFR32MG21A020F768IM32 + CH340E - Antenna: PCB antenna - Output Power: 20dBm - Interface: USB - Baud Rate: 115200 - Shell Material: Plastic - Color: As shown in product images - Package Includes: 1 x USB Dongle Module Note: Slight color variations may occur due to lighting and screen differences. Measurements allow a tolerance of +/- 1–3 cm. Only the listed items are included in the package.