Your ZEN51 Dry Contact Relay will work great with SmartThings out of the box!  

If you're having trouble accessing the advanced settings for the ZEN51, please follow the instructions here to install the custom lua Edge driver for the Relay.

Here is how to easily add it to your hub:

1. Power the relay up
2. Tap the plus icon in the home screen of the SmartThings app
3. Tap Device
4. Tap "Scan QR code." Scan the QR code printed on the inside of the cover of the relay
5. Input the 5-digit pin
6. On the SmartThings app, select the hub and room you'd like the device added to and click Next
7. When the app says "Get your device ready to connect", 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."
8. A few seconds later, the app will display a new device on the screen. 
9. Click Done

If your ZEN51 Relay is having trouble being added, begin the exclusion process to assist with any configuration or inclusion issues. It can be done even if the unit hasn't been added before:

1. Tap on your hub in the home page of the app or find it under Devices in the SmartThings app 
2. Tap the three dots in the top right
3. Tap Z-Wave Utilities 
4. Tap Z-Wave Exclusion
5. While the app is searching for a device, click the Z-Wave button 3 times as quickly as possible. 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."
6. The app will indicate when the device is successfully removed. Tap Done

Let us know if you have any questions!