Smlight - Zigbee USB Dongle EFR32MG21 + 3dB Antenna SLZB-07

Smlight SLZB-07: Zigbee USB Dongle with EFR32MG21 + CP2102N and +3 dB Antenna

The SMLIGHT SLZB-07 is a high-performance Zigbee USB dongle designed for easy and reliable integration of Zigbee devices into residential or industrial environments. Featuring the EFR32MG21 SoC and the CP2102N USB/UART converter, it delivers stable communication and robust compatibility with popular smart home platforms such as Zigbee2MQTT and ZHA (Home Assistant).

Its built-in +20 dB amplifier and included +3 dB rotatable external antenna ensure extended range and strong signal reliability, even in large or complex installations. With a compact plug-and-play USB design, it provides a seamless setup experience across Windows, macOS, and Linux systems.

Pre-flashed and ready to use, the SLZB-07 also supports multipan firmware for future compatibility with Thread and Matter, offering a scalable and future-proof solution for your connected environment.

Main Features

• Powered by Silicon Labs EFR32MG21 Zigbee SoC with ARM Cortex-M33 core
• Equipped with CP2102N USB/UART converter for stable data transfer
• +20 dB RF output with +3 dB external SMA antenna for extended range
• Supports Zigbee 3.X, Zigbee2MQTT, ZHA (Home Assistant)
• Ready for Thread and Matter via optional multipan firmware
• Compact and easy-to-install USB form factor
• Compatible with USB 2.0 and 3.0 ports

Technical Specifications

• Brand: SMLIGHT
• Model: SLZB-07
• Zigbee SoC: EFR32MG21 (ARM Cortex-M33)
• RAM: 96 KB
• Clock frequency: 80 MHz
• Protocols supported: Zigbee 3.X, Bluetooth LE, Thread/Matter (with firmware)
• USB/UART converter: CP2102N
• Antenna: External SMA +3 dB (included), 2.4 GHz compatible
• Connectivity: USB 2.0 / 3.0 (data and power)
• Power supply: 5V / 100 mA via USB
• Operating temperature: +5°C to +45°C
• Dimensions: 18 × 55.9 × 10 mm

Package Contents

• 1× SMLIGHT SLZB-07 USB Zigbee dongle
• 1× +3 dB external antenna (SMA)
• 1× User manual with QR code