Smlight SLZB Ultima

Length x Width x Height

- Length: the longest side of the device

- Width: the shorter side of the device

- Height: the vertical dimension of the device

The physical weight of the device, typically measured in grams (g) or ounces (oz).

Weight can be important for installation considerations, especially for wall-mounted or battery-powered devices.

Power over Ethernet (PoE) is a technology that delivers both electrical power and data through a single Ethernet cable, eliminating the need for separate power adapters.

Ethernet is a widely used technology for wired networking, providing a stable and high-speed connection between devices on a local area network (LAN).

Speed: Ethernet can offer higher and more consistent speeds compared to Wi-Fi. Modern Ethernet standards can support speeds from 100 Mbps (Fast Ethernet) to 10 Gbps (10 Gigabit Ethernet) and beyond.

Stability and Reliability: Because it uses a wired connection, Ethernet is less susceptible to interference from other devices and physical barriers, leading to a more stable and reliable connection.

Lower Latency: Ethernet typically offers lower latency compared to Wi-Fi, making it ideal for applications that require real-time data transfer, such as online gaming and video conferencing.

Security: A wired connection is generally more secure than a wireless one, as physical access to the network is required to intercept data.

Texas Instruments CC chips, such as the CC2531, CC2652, and CC1352 families, are widely used due to their long history in Zigbee development, strong community support, and excellent compatibility with popular Zigbee stacks. Newer CC26xx and CC13xx chips offer significantly more RAM and flash, enabling support for larger Zigbee networks with many devices and complex routing tables.

Silicon Labs EFR32 chips, including EFR32MG21 and EFR32MG24, are more recent and focus on higher performance, lower power consumption, and multi-protocol capabilities. These chips are commonly used in modern coordinators that support Zigbee, Thread, and Matter. They generally offer strong radio performance and are well suited for future-proof setups, especially where Matter over Thread is a consideration.

A Zigbee Router (or Repeater) is a Zigbee device that stays powered all the time and helps extend and stabilize your Zigbee network by relaying messages between devices.

It acts as a repeating node in the Zigbee mesh, allowing signals to travel farther through multi-hop routing.

A Z-Wave Controller is the central device that manages and coordinates a Z-Wave network in a smart home system. It is responsible for adding and removing Z-Wave devices, maintaining the mesh network, routing messages between nodes, and enabling secure communication and automations. The controller can be a dedicated hub, a USB dongle connected to a server, or an integrated component within a smart home gateway, and its reliability directly affects the performance and stability of the entire Z-Wave network.

A Thread Border Router is a device that connects your Thread mesh network to your home IP network (Ethernet or Wi-Fi), letting Thread devices communicate with apps, hubs, and the internet. It doesn't control Thread by itself, it acts as the bridge that enables setup, remote access, and cross-network communication.

Matter is a unified, open-source connectivity protocol designed to standardize and simplify communication between smart home devices from different manufacturers. Developed by the Connectivity Standards Alliance (formerly the Zigbee Alliance), Matter aims to improve interoperability, security, and reliability across various smart home ecosystems.

Matter operates over existing networking technologies, including Ethernet, Wi-Fi, and Thread, providing flexibility in device connectivity. Its IP-based nature allows seamless integration with existing internet infrastructure and cloud services. Matter uses a mesh networking topology, particularly when operating over Thread, to enhance range and reliability by allowing devices to dongle data through each other.

Security is a cornerstone of Matter, with end-to-end encryption and secure device onboarding processes ensuring robust protection for data and privacy. Matter also supports over-the-air updates, allowing devices to stay current with the latest features and security enhancements.

Home Assistant is an open-source platform that allows for extensive customization and integration of a wide variety of smart devices. It supports a multitude of protocols and brands, making it ideal for tech-savvy users.

Can run both Zigbee and Thread at the same time, with each protocol handled by a separate dedicated radio.

Can function as Bluetooth Low Energy (BLE) proxy devices for Home Assistant. This allows them to relay BLE signals (e.g. from temperature or presence sensors) to Home Assistant over the network, extending Bluetooth coverage in your home.

Allows you to access USB devices (Z-Wave sticks, extra Zigbee coordinators, UART modules) over Ethernet as if they were connected locally.