This is product is discontinued and replaced with ZEN04.

What does that mean?

Do you have manual control of the ZEN06, but you're unable to control it via Home Assistant? Try the steps below:

Interferences like large furniture, thick walls, and metal elements can shorten range. Ultimately, the range is determined by the specific structure of your home and the strength of your mesh network. If you're seeing connectivity issues, we first recommend healing your Home Assistant network. This function refreshes the connections between your hub and devices so that the hub can find the most efficient route to each device.

1. Click on the Z-Wave Control Panel in Home Assistant
2. Under Z-Wave Network Management, click Heal Network

If healing the network didn't help get the device back get back online, here are some other things that may help:

1. Try excluding and re-including the Smart Plug directly from the installation location. It's possible that the hub hasn't found the most efficient communication route to the device; exclusion can help refresh these connections. 
2. Try moving the ZEN06 to a location closer to the hub, making sure to exclude and re-include it from the new spot. If it connects successfully, the previous spot may have been out of range. 
3. If you have a Z-Wave signal repeater available, try including it in a spot halfway between the Smart Plug and hub. A signal repeater is any non-battery powered Z-Wave device. If the issue is caused by interference or range, a signal repeater can help strengthen and stabilize connectivity. After adding the repeater, it's a good idea to heal your network once more. 

If the problem persists, please let us know! We're always here to help.