If you are unable to include your ZEN51 Dry Contact Relay to Home Assistant, start by excluding the device. The relay can be excluded from Home Assistant even if it has never been successfully included. Exclusion acts as a soft reset to help with any configuration issues.

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.

If Home Assistant is having trouble recognizing the device: 

1. In Home Assistant: open Settings > Devices and Services > Z-Wave JS > Configure
2. Click on Remove Device
3. Click on Start Exclusion
4. 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!
5. Home Assistant will confirm that the device was removed, and you should now be able to add it to your system

Please reach out to us if you have any questions!