What you can do:

• You can use this SoC as Zigbee Coordinator, Zigbee Router or Open Thread Border Router

Use cases:

• High-performance Zigbee coordinator for Home Assistant

• Dedicated Thread network for Matter devices

• Zigbee router for range extension and mesh stability

What you can do:

• You can use this SoC as Zigbee Coordinator, Zigbee Router or Open Thread Border Router

Use cases:

• Parallel Zigbee or Thread network

• Vendor-specific testing or migration scenarios

• Redundant or isolated smart-home environments

What you can do:

• Z-Wave 800 add-on allows you to run a full Z-Wave network over Ethernet using Home Assistant Z-Wave JS.

Use cases:

• High-performance Z-Wave controller

• Different Z-Wave regions are supported

• Centralized Z-Wave over Ethernet or USB.

What you can do:

• ESP32-S3 Wi-Fi 2.4Ghz provides the primary network backbone for SLZB-Ultima, enabling wireless operation, Ethernet-backed bridging, and internet access for all internal and external radios.

Use cases:

• Standalone smart-home gateway over Wi-Fi

• Backup or secondary connectivity when Ethernet is unavailable

• Internet access for remote or mobile installations

What you can do:

• ESP32-S3 Bluetooth enables Bluetooth Proxy functionality when running ESPHome firmware, allowing Home Assistant to discover, connect to, and communicate with BLE devices over the network

Use cases:

• Bluetooth Proxy for Home Assistant

• Integrate BLE sensors, locks, and trackers

• Presence detection and room-based monitoring

What you can do:

• The built-in IR receiver allows SLZB-Ultima to capture and expose infrared commands from standard remote controls. Received IR signals can be displayed, logged, and used as triggers for automations in Home Assistant.

Use cases:

• Capture and analyze IR commands from TV, AC, or AV remotes

• Learn legacy IR protocols for later retransmission

• Integrate non-smart IR devices into a modern smart-home setup

What you can do

• The built-in IR transmitter allows SLZB-Ultima to send infrared commands to TVs, air conditioners, and other IR-controlled devices. It can transmit predefined codes, triggered by Home Assistant or other automations logic.

Use cases:

• Control TVs, AC units, projectors, and AV equipment

• Automate climate or media devices without cloud services

• Replace multiple IR remotes with a single smart controller

What you can do

• The optional PoE add-on allows SLZB-Ultima to be powered directly via Power over Ethernet, delivering both power and data over a single cable. This enables cleaner installations and easy integration into professional or rack-mounted

Use cases:

• Single-cable power and network connectivity

• Centralized power via PoE switches or UPS-backed infrastructure

• Professional smart-home and commercial deployments

What you can do

• The optional 4G / LTE add-on turns SLZB-Ultima into a self-contained internet gateway, providing mobile data connectivity without relying on wired or local Wi-Fi networks. It can operate as a primary or backup WAN.

Use cases:

• Internet access in remote or hard-to-reach locations

• Autonomous smart-home or IoT deployments

• Temporary installations, mobile setups, or field testing

What you can do

• The dedicated USB host port allows SLZB-Ultima to connect additional radios and peripherals, extending the device beyond its built-in hardware. This enables support for external Zigbee, Thread, Z-Wave USB adapters, as well as experimental or custom USB devices, depending on firmware and driver support.

Use cases:

• Add extra Zigbee, Thread, or Z-Wave radios

• Run parallel or isolated networks for testing or migration

• Extend functionality without replacing the core device

What you can do:

• The built-in buzzer provides audible feedback and notifications directly from the device. It can generate beeps, alerts, and simple melodies triggered by system events, user actions, or automations.

Use cases:

• Confirmation, warning, and error sounds

• Local status notifications and alerts

• Audible signaling in remote installations

What you can do:

• The optional microphone add-on provides audio input when running ESPHome-based firmware, enabling audio streaming and processing in Home Assistant (for example, in Voice Assistant) or custom DIY projects.

Use cases:

• Audio streaming to Home Assistant via ESPHome

• Voice- or sound-triggered DIY automations

• Prototyping custom audio-based integrations

What you can do:

• SLZB-Ultima features 12 on-board WS2812B RGB LEDs that provide rich, fully addressable visual feedback. The LEDs can display colors, patterns, and animations to reflect system states, network activity, alerts, or custom logic.

Use cases:

• Visual indication of system, network, or radio status

• Confirmation, warning, and error animations

• Custom LED effects for automations and scenes

What you can do:

• SLZB-Ultima includes 3 physical buttons and 4 service LEDs for direct, local interaction with the device. They allow users to trigger actions, change modes, initiate pairing, perform resets, and visually monitor system states—without requiring web or network access.

Use cases:

• Manual actions and quick local control

• Mode switching or reset operations

• Visual indication of system and network states

What you can do:

• With Dynamic DNS (DDNS) support, SLZB-Ultima remains reachable even when your internet connection uses a changing public IP address. The device automatically updates its address, enabling reliable remote access without manual router reconfiguration.

Use cases:

• Remote access to SLZB-Ultima from anywhere

• Managing installations behind consumer ISPs

• Reliable access without purchasing a static IP

What you can do:

• With built-in WireGuard VPN support, SLZB-Ultima can establish secure, encrypted connections to remote Home Assistant or other systems. WireGuard provides modern cryptography, high performance, and low overhead, making it suitable for permanent connections, mobile access, and site-to-site smart-home setups.

Use cases:

• Secure remote access without exposing ports

• Encrypted connection to Home Assistant or internal services

• Safe management of remote or mobile installations

What you can do:

• SLZB-Ultima can run a lightweight built-in Zigbee hub, acting as a micro alternative to Zigbee2MQTT or ZHA for small, local setups - without Home Assistant or external services. It allows you to pair, monitor, and control Zigbee devices directly on the SLZB-Ultima.

Use cases :

• Small Zigbee networks without ZHA or Zigbee2MQTT

• Simple lighting, switching, or sensor monitoring

• Remote or offline installations with minimal infrastructure

What you can do:

• SLZB-Ultima can execute local automations directly on the device, allowing logic and actions to run independently of the internet or external controllers. This ensures low latency, high reliability, and continued operation even when Home Assistant or network connectivity is unavailable.

Use cases :

• Turn on a light when a door Zigbee sensor is triggered

• Reboot the device on socket failure

• Parse online data and trigger GPIO or outputs

What you can do:

• SLZB-Ultima supports over-the-air (OTA) firmware updates, allowing both core and radio firmware to be updated remotely through a simple, controlled update process - no physical access required.

Use cases :

• Update devices deployed in remote locations

• Roll out fixes and improvements safely

• Maintain and manage multiple devices at scale

SLZB-OS:

User-friendly web interface with advanced features such asWireGuard VPN, DDNS, internal automations, internal Zigbee Hub mode (no Home Assistant / Z2M required), and one-click firmware updates.

ESPHome:

Native Home Assistant integration with support for Bluetooth Proxy, IR receiver/transmitter, WS2812B LEDs, buttons, buzzer, GPIOs, with some limitations for advanced multi-radio and standalone hub scenarios.