SMLIGHT SMHUB Essential Zigbee Hub MG21

SMHUB Essential is SMLIGHT’s flagship Linux-powered smart hub, designed for high-performance, fully local automation in residential, commercial and professional environments. Built on SMHUB-OS, all automation services run directly on the device itself, with no reliance on cloud platforms, external servers or Raspberry Pi hardware.

With strong CPU performance, generous storage, multi-radio support, integrated peripherals and a rich add-on ecosystem, the SMHUB Series provides a reliable and extensible automation platform for modern smart homes, commercial buildings, installers and system integrators.

Zigbee2MQTT, Node-RED, Mosquitto MQTT, WireGuard VPN, OpenThread tools and additional services run locally on the hub, allowing it to function as a complete standalone automation controller. Using Matterbridge, Zigbee devices can be passed through to Google Home and Apple Home for control via Matter-capable ecosystems.

SMHUB is ideal for integrators, OEM partners, installers and advanced home users who require a powerful, expandable and locally controlled smart hub.

SMHUB Essential overview

Radio 1: Texas Instruments CC2652P
Radio 2: Silicon Labs EFR32MG21

Core platform
CPU: SG2000 dual-core ARM
RAM: 512 MB LPDDR4
Internal storage: 8 GB eMMC
Expansion: microSD slot up to 2 TB
Operating system: SMHUB-OS (Linux-based)

Connectivity and radios
Quad-radio architecture
• Texas Instruments CC26XXPX (Zigbee / Thread)
• Silicon Labs EFR32MG2X (Zigbee / Thread)
• AICSemi AIC8800 Wi-Fi (2.4 GHz / 5 GHz)
• AICSemi AIC8800 Bluetooth
Ethernet: 100 Mbps for stable, interference-free networking
USB host mode with remote USB over LAN

Integrated peripherals
12 × WS2812B addressable RGB LEDs
4 × service status LEDs
Audio output
IR receiver
IR transmitter
Buzzer
3 × programmable buttons

Expansion ecosystem
PoE add-on (included)
Z-Wave 800 add-on
4G / LTE add-on
Microphone add-on
UPS add-on
Support for custom add-ons via UART or I2C using 2.54 mm connectors

Power options
USB-C 5 V
PoE via included PoE add-on
SMLIGHT UPS support via USB-C or dedicated connector

Antennas
2 × high-output 5 dB external antennas for extended coverage and improved mesh performance
Expandable with additional external antennas for add-ons

Linux-based smart hub features
All automation runs locally on the device
Integrated web dashboard
OTA updates for operating system, applications and radio firmware
SSH access for advanced configuration and development

Preinstalled on-device software
Zigbee2MQTT
Matterbridge for Google Home and Apple Home integration
Node-RED
Mosquitto MQTT broker
WireGuard VPN
OpenThread tools
NodeJS and Python runtime environments

Box contents
SMHUB hub
2 × external antennas
QR-link manual and screw helper
Retail packaging