# 10. Glossary

**Ambilight** – Integrated RGB LED ring used for status indication and visual effects.

**Apps** – Modular software packages (e.g., Zigbee2MQTT, Node-RED) that can be installed/uninstalled independently on SMHUB.

**BLE (Bluetooth Low Energy)** – Energy-efficient version of Bluetooth for sensors, tags, and small IoT devices.

**DDNS (Dynamic DNS)** – A service that maps a dynamic IP to a permanent domain name for remote access.

**Matter** – A connectivity standard that allows devices from different ecosystems (Google, Apple, Amazon, SmartThings) to interoperate.

**Matterbridge** – An application that bridges Zigbee/Thread devices to the Matter ecosystem.

**MQTT (Message Queuing Telemetry Transport)** – A lightweight messaging protocol used for IoT communications. SMHUB includes a built-in **Mosquitto MQTT broker**.

**Node-RED** – A flow-based programming tool for IoT automation, preinstalled on SMHUB.

**OTBR (OpenThread Border Router)** – Service that connects Thread devices to IP networks.

**PoE (Power over Ethernet)** – A method of delivering power and data over the same Ethernet cable.

**UPS (Uninterruptible Power Supply)** – Add-on module with 18650 cells providing backup power during outages.

**WireGuard** – A modern VPN protocol, preinstalled on SMHUB for secure remote access.

**Zigbee2MQTT (Z2M)** – Application that connects Zigbee devices to MQTT brokers, enabling integration with multiple smart home platforms.

**Z-Wave JS** – An open-source software stack for managing Z-Wave devices.