What is Z-Wave?
Z-Wave is a wireless mesh networking protocol designed exclusively for smart home devices. Unlike Zigbee which operates on the crowded 2.4GHz band, Z-Wave uses sub-GHz frequencies (908.42MHz in North America) - meaning zero interference from WiFi, Bluetooth, or Zigbee.
Z-Wave is a proprietary protocol managed by the Z-Wave Alliance, which means all Z-Wave devices must pass certification. This results in excellent interoperability - any certified Z-Wave device works with any Z-Wave controller.
No Interference
Sub-GHz frequency avoids WiFi congestion
Certified Devices
All devices are interoperability-tested
Great for Locks
Industry standard for smart locks & security
Z-Wave Long Range (LR)
Z-Wave Long Range is a major evolution of the protocol, introduced with the 700 series chips and fully realized in the 800 series. It dramatically extends range while maintaining backward compatibility.
Z-Wave LR Capabilities
Z-Wave LR is ideal for outbuildings, detached garages, large properties, and anywhere you need reliable communication over long distances. LR devices communicate directly with the controller (star topology) while classic Z-Wave devices still use the mesh.
Z-Wave Controllers
Like Zigbee, Z-Wave requires a controller (sometimes called a "stick" or "dongle"). For the best experience with Home Assistant and Z-Wave Long Range support, choose an 800-series controller.
Our Recommendation: Home Assistant ZWA-2
The official Home Assistant Z-Wave dongle with the 800-series chip. Full Z-Wave Long Range support, excellent compatibility, and seamless integration with Z-Wave JS.
- ✓ 800-series with Z-Wave Long Range
- ✓ Excellent range with external antenna
- ✓ Officially supported by Home Assistant
- ✓ Backward compatible with all Z-Wave devices
Other 800-Series Controllers
💡 700 vs 800 Series
The 800-series is the current generation with Z-Wave Long Range support. 700-series controllers are still excellent for standard Z-Wave but won't support LR devices. For new purchases, always get 800-series.
Z-Wave with Home Assistant
Home Assistant uses Z-Wave JS for Z-Wave integration. This is a modern, JavaScript-based driver that runs as a separate process and communicates with Home Assistant.
Z-Wave JS UI (Recommended)
Full-featured add-on with a web UI for advanced configuration, firmware updates, and network management.
Z-Wave JS Add-on
Minimal add-on without UI. Good for headless operation after initial setup.
⚠️ Migration Note
If you're coming from legacy OpenZWave, migration to Z-Wave JS is straightforward. Z-Wave JS is actively maintained and has much better device support.
Popular Z-Wave Devices
Z-Wave excels in areas requiring reliability and security. Here are some top picks:
Z-Wave vs Zigbee: When to Use Each
Both protocols are excellent. Here's when to choose each:
Choose Z-Wave For
- •Smart locks and security devices
- •Large properties (with LR)
- •Apartments with heavy WiFi interference
- •Outbuildings and detached structures
Choose Zigbee For
- •Budget sensors (motion, door, temp)
- •Smart bulbs (more options, cheaper)
- •When you want maximum device variety
- •IKEA TRADFRI ecosystem
🎯 Best of Both Worlds
Many smart homes use both protocols. Run Z-Wave for locks, thermostats, and switches. Run Zigbee for sensors and lighting. Home Assistant handles both seamlessly.
Need Help with Z-Wave?
We design and install complete smart home systems optimized for your needs. Whether you need Z-Wave, Zigbee, or both, we'll help you build a reliable, future-proof system.