Zigbee
Zigbee is installed in hundreds of millions of devices. Smart lighting (Hue, IKEA Trådfri), home hubs (SmartThings, Home Assistant), and building automation all use it. Understanding ZCL clusters and coordinator setup is required for integrations.
What It Defines
Zigbee is a low-power, low-data-rate mesh networking protocol built on IEEE 802.15.4. Operates in 2.4 GHz globally; supports mesh topology with coordinator/router/end-device roles; Zigbee Cluster Library (ZCL) defines application-layer interoperability for device types (lights, sensors, switches). Widely deployed in smart lighting (Philips Hue) and building automation.
Canonical (Normative)
Convenient (Practical)
Industry consortium (formerly Zigbee Alliance) that develops IoT connectivity standards. Merged with the Thread Group. Maintains Matter (smart home unification), Zigbee, and Z-Wave specifications. Members include Apple, Google, Amazon, Samsung, and all major IoT chipmakers.
Related Specs
Matter is the end-state for smart home interoperability. Any connected home product launched today needs Matter support. Understanding commissioning, fabric topology, and the data model is essential for IoT product developers.
Thread is the networking layer under Matter — when you see Matter over Thread, Thread is doing the mesh networking. Understanding the border router, DTLS commissioning, and leader/router/end-device roles is required for Matter deployments.
Z-Wave is strong in smart locks, sensors, and dimmers — especially from legacy vendors. Integration with Home Assistant, SmartThings, or Z-Wave JS requires understanding mesh inclusion and command classes.