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My ZEN21 On/Off Switch Shows Offline in SmartThings
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If your switch is Unavailable or keeps dropping offline, this usually points to a connectivity issue. 

(This is a discontinued product, replacement model: ZEN71)

 

network repair will help refresh your mesh network's connections. See the steps below to run the repair:

 

  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 Repair Z-Wave Network 
  5. Tap Start Repair 

Before sending any commands to your On/Off Switch, wait until you see the "Z-Wave Network Repair finished" message - this can take up to 15 minutes. Once repair is completed, try including the switch back into your network.

 

If Network Repair doesn't help, simply try excluding and re-including the device. It's possible that the communication route between SmartThings and the switch didn't configure correctly the first time. Exclusion might help the hub find the best route to the device.

 

If possible, try installing the switch closer to your hub or bringing the hub closer to the switch. This can be a frustrating troubleshoot, but it's a good way to see if the issue really is range. Once you've moved either the switch or your SmartThings hub, remember to exclude and re-include the switch to refresh the connection. 

 

Another important set-up detail is the material of your switch box. Metal switch boxes, as opposed to plastic, can shorten range and make connectivity unreliable. Metal is pretty effective at disrupting Z-Wave signals, so if your device is inside a metal box this may be why it keeps going offline. If possible, try installing a Z-Wave repeater between the switch and the hub. Any non-battery powered Z-Wave device (like a Z-Wave plug) will extend the signal for you but Z-Wave Plus devices will be almost twice as effective as the older generation products.

 

If you've tried all of the above and are still seeing the same issue, please don't hesitate to reach out! Our team is always happy to help. 

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