SLZB Ultima – ESP32-S3 Multi-Protocol Home Automation Gateway
The SLZB Ultima is a powerful home automation gateway built on the ESP32-S3 platform, designed for advanced users, integrators, and enthusiasts seeking extensive protocol support and long-lasting performance. Compact yet highly capable, it combines multiple radios, interfaces, and expansion options into a single device.
It enables simultaneous management of Zigbee, Thread, Bluetooth, and Wi-Fi networks, with optional support for Z-Wave or 4G/LTE. With its flexible architecture and local processing capabilities, the SLZB Ultima is ideal for complex smart home systems as well as standalone or experimental setups.
Key Features
Simultaneous Zigbee and Thread network management via dual integrated radios
Supports Zigbee Coordinator, Zigbee Router, and Thread Border Router modes
Bluetooth Proxy functionality for Home Assistant
Built-in 2.4 GHz Wi-Fi connectivity
Integrated infrared transmitter and receiver for IR devices
Local automation without reliance on cloud services
OTA (Over-The-Air) firmware updates
WireGuard VPN support for secure remote access
DDNS support for remote access without a fixed IP
Standalone Zigbee hub functionality without requiring Home Assistant
Compatibility
Home Assistant
Zigbee2MQTT
ZHA
Matter over Thread
Z-Wave JS (with optional module)
ESPHome
Technical Specifications – SLZB Ultima (SZLB-Ultima)
