A customer asks for smart locks, lighting and a thermostat on top of the alarm, and the first question is which radio carries them. For a security dealer, Z-Wave vs Zigbee is rarely a free choice: the panel you install is usually the controller, and its radio decides what you can add. This guide compares the two protocols on the points that matter on an install.
What is the difference between Z-Wave and Zigbee?
Z-Wave runs in the sub-GHz band (908.42 and 916 MHz in North America), is certified by the Z-Wave Alliance and is the automation radio built into most security panels. Zigbee runs at 2.4 GHz alongside Wi-Fi, supports very large meshes and dominates lighting. Security dealers usually choose Z-Wave because the panel already controls it.
Z-Wave vs Zigbee at a glance
Both are low-power mesh networks for battery and mains-powered devices. They do not talk to each other directly; a hub needs both radios to run both. The table sets out the differences that affect a residential or light commercial job.
| Point | Z-Wave | Zigbee |
|---|---|---|
| Band (North America) | 908.42 and 916 MHz; Long Range on 912 and 920 MHz | 2.4 GHz, shared with Wi-Fi and Bluetooth |
| Network size | 232 nodes in mesh; up to 4,000 with Long Range | Thousands of nodes per mesh |
| Standards body | Z-Wave Alliance | Connectivity Standards Alliance |
| Typical role | Locks, thermostats, lights on alarm panels | Lighting systems, sensors, retail hubs |
| Security | S2 framework | AES-128 encryption |
Radio band and interference
The biggest practical difference is the frequency. Z-Wave sits below 1 GHz, so it passes through walls and floors better than a 2.4 GHz signal at the same power, and it does not compete with the home’s Wi-Fi. Zigbee shares 2.4 GHz with Wi-Fi access points, Bluetooth devices and microwave ovens.
Zigbee copes with this, but it pays to plan. Zigbee uses channels 11 to 26 in the 2.4 GHz band, and channels 15, 20 and 25 fall between Wi-Fi channels 1, 6 and 11. If a Zigbee network drops devices, check what channel the access points use before blaming the devices.
One Z-Wave trap: the frequency is regional. A European Z-Wave device runs on a different band and will not join a North American controller, so check the part number before you order.
Mesh size, range and Z-Wave Long Range
In both protocols, mains-powered devices such as switches, dimmers and plug-in modules act as repeaters. Battery devices such as locks and sensors do not repeat, because they sleep to save power. A good mesh therefore depends on where the powered devices sit, not on how many devices there are.
Classic Z-Wave supports 232 nodes and roughly 100 m per hop in open air, according to the Z-Wave Alliance comparison of Z-Wave and Z-Wave Long Range. Long Range uses a star topology instead of a mesh, supports up to 4,000 nodes and reached 1 mile line of sight in its first implementation. Both the hub and the device must support Long Range to use it, and Long Range nodes can share a network with classic nodes.
Zigbee meshes scale further on node count, which suits large lighting projects. For a typical home with a few locks, a thermostat and a dozen lighting loads, node count is never the limit on either protocol.
Interoperability and certification
Z-Wave products that carry the logo go through Z-Wave Alliance certification, and a certified device from one maker will generally include on a certified controller from another. Basic functions such as lock, unlock, on, off and set point are the most dependable; advanced features may need the controller to support that device’s command classes.
The Connectivity Standards Alliance Zigbee specification page describes a self-healing mesh, AES-128 encryption and a certification program for products and platforms. In practice, Zigbee devices from different makers vary more in how well they pair with a given hub. Check the hub’s compatibility list for every device, not just the brand.
Security: S2 and encryption
Modern Z-Wave devices use the S2 security framework, which adds authenticated inclusion, usually by scanning a QR code or entering a PIN printed on the device. Z-Wave Long Range supports only the S2 Authenticated and S2 Access classes. For locks and garage controllers, insist on S2 and keep the device label or packaging for the customer file, because you need that code to include it again.
Zigbee encrypts traffic with AES-128 and has improved its device authentication in recent releases. Both protocols are adequate when installed correctly. The weak point is usually the installer skipping secure inclusion, not the radio.
Z-Wave for security dealers: the panel decides
On most residential systems, the intrusion sensors run on the panel’s own sensor radio, and Z-Wave handles the automation layer: locks, lights, thermostats and shades. 2GIG panels, for example, include a built-in Z-Wave controller, so a dealer installing one adds Z-Wave devices without a separate hub. That is why most dealers stock Z-Wave rather than Zigbee.
Field habits that save return trips:
- Install the mains-powered switches and modules first, then include battery devices last so they find a route.
- Include locks in their final position on the door, not on the bench beside the panel.
- Exclude any used or previously paired device before including it.
- Keep the panel out of metal enclosures and away from large appliances that block the signal.
The life safety and intrusion side should stay on the panel’s listed sensors. For the trade-offs there, see our guide to wireless vs hardwired alarm sensors.
Where Matter and Thread fit
Matter is an application standard, not a radio. It runs over Wi-Fi and Thread, and Thread shares the same 802.15.4 radio as Zigbee but uses a different network layer. Neither Z-Wave nor Zigbee joins Matter natively; both reach it through a bridge.
For a dealer, Matter does not change today’s Z-Wave decision on a security panel. It matters when a customer wants the system to work with a voice assistant or phone platform, where the bridge becomes part of the design.
Where to buy Z-Wave devices and panels
Bursma carries Z-Wave locks, switches and automation devices alongside 2GIG security panels, intrusion alarm equipment, lighting controls and thermostats and climate controls, all within the security, surveillance and control division. Dealers see their own pricing and stock in Shop Online after logging in. If you install for a living, open a dealer account or visit our Grand Rapids area branch.
Frequently asked questions
Is Z-Wave better than Zigbee?
Neither is better everywhere. Z-Wave suffers less interference and is built into most security panels, which makes it the usual dealer choice. Zigbee suits large lighting systems and hubs that already carry a Zigbee radio.
Can Z-Wave and Zigbee devices work together?
Not directly. They use different radios and network layers. A hub or panel with both radios can run both and link them in scenes and rules.
Does Zigbee interfere with Wi-Fi?
They share the 2.4 GHz band, so heavy Wi-Fi traffic can affect Zigbee. Placing Zigbee on channels 15, 20 or 25 keeps it between Wi-Fi channels 1, 6 and 11.
How many Z-Wave devices can one panel control?
A classic Z-Wave network supports up to 232 nodes, and Long Range raises that to 4,000. In practice the panel’s own device limit is lower, so check the panel documentation before quoting a large job.