Your ZEN51 Dry Contact Relay can be quickly added to Home Assistant! We recommend using the new JS Z-Wave integration for optimal results.
Important Note: A steady, blinking green is the standard state for the device; as long as the unit has power, it will blink green at a steady pace. The device has an internal relay, which can turn on and off with a click of the Z-Wave button. This means that when you are attempting to include or exclude the device, the clicks need to happen as fast as possible; if the clicks are not completed fast enough, the relay will engage instead and the device will not enter inclusion or exclusion mode. You will know you have clicked fast enough when the LED indicator begins flashing rapidly.
With the new ZWaveJS integration of Home Assistant, your smart home setup becomes more seamless, robust, and future-ready. We strongly recommend upgrading to this integration to ensure your Zooz devices are recognized and function correctly.
The latest Z-Wave JS UI now supports Z-Wave Long Range (ZWLR), significantly extending the reach and reliability of your network. Even better, you now have the flexibility to use both traditional Z-Wave mesh and ZWLR devices on the same hub—giving you the best of both worlds. And with SmartStart QR code scanning now supported, device inclusion has never been quicker or easier.
When deciding which method to use, we recommend reading more about Z-Wave Long Range and how it differs from the Z-Wave mesh, as well as when to choose mesh vs ZWLR in the following two articles:
Z-Wave Long Range FAQ's
All About Z-Wave Long Range
Mesh or ZWLR is established at the time of inclusion; if you wish to change a currently included device from mesh to ZWLR or vice versa, this can only be done by excluding the device and re-including with the proper method.
Standard Mesh Inclusion
- Power the relay on. The LED indicator will be a slow, blinking green.
- In Home Assistant: click on Add a Z-Wave Device.
- When Home Assistant displays the following message: "Your Z-Wave controller is now in inclusion mode. Follow the directions that came with your device to trigger pairing on the device," click the Z-Wave button 3 times as quickly as possible (the LED indicator will start flashing). Alternatively, if the relay is already installed, you can simply toggle the external switch connected to ZEN51 very quickly from off to on, so: "up-down, up-down, up-down." Check out the video linked here to show you how this process works!
- If asked to enter the security PIN, enter the PIN located on the back of the relay, next to the Z-Wave Plus logo.
- The LED indicator will rapidly blink green to signal communication, and turn green for 2 seconds if inclusion is successful
- Home Assistant will confirm that the relay was added, and it will be immediately visible in your device list. Within a short time, seconds to minutes, the entities should also be created.
Z-Wave Long Range Inclusion
The Z-Wave JS UI integration of Home Assistant now supports Z-Wave Long Range (ZWLR) and with the latest app update (minimum 2025.5), QR code scanning for SmartStart is now supported. You will need to ensure you are using a Z-Wave stick that supports ZWLR along with a ZWLR supporting version of the ZEN51 (minimum FW 1.50)
Ensure the device you want to include is NOT powered on at this time. SmartStart will only work if the device is not powered on until step 6.
1. From the menu, click Settings.
2. Choose Devices and Services.
3. From the devices page click Add Device.
4. Scan the QR Code from your ZWLR device.
5. Choose Direct Long Range.
6. Power on your device.
7. The device is now added with ZWLR.
If Home Assistant is having trouble recognizing the device, check out the troubleshooting steps here.
We'll be happy to help if you have any other issues or questions! Just reach out to us!
