Exclusion is just like a reset, and can help with a variety of configuration and connectivity issues. Let's try exclusion first.

Devices don't need to be included properly to be able to be excluded. Check out the steps to exclude your ZSE19 below:

1. Open your SmartThings app and locate your SmartThings hub under Devices. Tap the hub to see the device details. 

2. Tap the three dots in the upper right hand corner and tap Settings

3. Tap Z-Wave Utilities 
4. Tap Z-Wave Exclusion
5. While the app is searching for a device, click the Z-Wave button on the device 3 times very quickly
6. The app will indicate when the device is successfully removed. Tap Done

Once the successful exclusion message appears on your hub, try including the siren to SmartThings again.

If exclusion didn't make a difference, here are some other solutions that have worked for users in the past:

• Try the exclusion process again! Sometimes commands from the first run aren't registered correctly, so sometimes this can help.
• Try the inclusion process again, only this time instead of clicking the Z-Wave button 3 times, click it 4-5 times as quickly as possible.
• Try including in a non-secure mode if you attempted adding it securely the first time.
• Bring the siren closer to SmartThings to verify it's not a range issue. 
• Double check that the device is powered and that the batteries are oriented properly. 
• If the unit is generally unresponsive, try performing hard reset on it and trying the inclusion process again.

But if you're still seeing issues with the exclusion/inclusion process no matter what you try, let us know! Our team will be happy to help.