How it works
Zigbee and Z-Wave are different radio ecosystems, not interchangeable labels for the same connection. A controller may support one, both or neither. Protocol choice must consider the actual accessory functions, regional suitability and maintenance arrangement.
A practical example
A household with an existing Zigbee coordinator cannot simply add a Z-Wave sensor to that network. A combined controller may connect both while retaining separate radio networks. Compare the real devices and the app experience, not a generic claim that one technology is always better.
What to check
List supported models, required controllers, power arrangements and recovery procedures. Check which features the app exposes and test coverage at the installation. Compare update support and local versus cloud-dependent operation for the intended functions.
Limits and safe next steps
No protocol guarantees perfect range or universal compatibility. Do not choose from headline range alone. Document why the selected system meets the task and retain manual operation for essential functions.