I’ve tried calling Leviton with no success. Is this device a z-wave repeater?
I looked at these last week at Home Depot. I was curious so visited a few sites. This may answer your question.
I called them and they say they don’t know. The Leviton technical data and FAQs don’t say. I have (3) of these deployed and they work well. I have a couple outside controlling holiday lights and it shows up an unavailable in the ST dashboard, yet I can still turn it on/off via the ST app.
Any certified Z wave device should have a conformance statement filed at the official zwave alliance site. In this case:
That particular model is a “routing slave.“ A mains powered routing slave is a repeater. ( that’s what “routing“ means in this context.)
The Routing Slave can host a number of routes for reaching other nodes. Such routes are called “Return Routes”1. The Routing Slave can either be A/C powered or battery powered. If the Routing Slave is mains powered it is used as a repeater in the Z-Wave network. The Routing Slave functionality is used for devices that need to report unsolicited status or alarms.
You can always check technical details at the zwave alliance official site.
Almost all mains powered Z wave devices are repeaters. Exceptions are normally safety system devices like smoke sensors where you don’t want them to delay their primary function because they’re busy passing along a message for some other device on the network.