I currently have a Neo Coolcam Power Plug, but it appears to be causing some z-wave or Hubitat issues. So I'm looking for an alternative z-wave plus power mini plug for a US outlet that's highly reliable with Hubitat. I'd like it to be as small as possible, and plug into an existing 120v outlet.
I have a couple of the Zooz ZEN15 outlets. They are reliable, but do not meet your criteria for mini-plug. I use them with my washer and sump pump.
The Zooz ZEN25 are plugs, but they have two outlets plus USB charging capability, so they are not exactly mini-plugs, either.
I do have a Leviton DZPA1-2BW Decora Smart Plug, but I cannot say I have been pleased with its reliability. I would not purchase another one.
Unless you need the Z-wave outlets as repeaters for your mesh, I would suggest that you look at Zigbee plugs such as these.
I love those plugs. They work well and are great Zigbee repeaters. The only thing that I do not like about the plugs is that they do not have power monitoring capability. That is why I use the ZEN15 outlets on my washer and sump pump.
The only issue that I had with mine was that it would only communicate at 9.6 kbps, even though it was a zwave+ device.
There is an antenna modification described for these devices (to expose the internal antenna) that apparently makes a dramatic difference. @kkossev described it in this post:
I noticed that adding an external antenna to my C-7 Hubitat also made a huge difference. My unmodified NEO CoolCam plugs now connect at 100 kbps and are very responsive. The plug below, which used to connect only at 9.6 kbps, now connects at 100 kbps .....
Thanks for the info. The problem I'm having with the Coolcam is that pretty often when I turn it off or on via Hubitat or the Apple Home app via HOOBS, it's like the whole z-wave network or the Hubitat hub freezes and for a good 1-3 minutes and I can't control ANY light in the house while it's in this state. This freezing issue only happens with this plug (only have one of them). The rest of my lights are controlled via hard wired Homeseer z-wave plus switches and they are rock solid.
I don't think range is the issue, as my house is filled with z-wave repeaters via the Homeseer switches and this plug is pretty close to a couple of switches.
Well I got the "NewOne" z-wave plug and it's NOT 700 series (according to the paper instruction manual). The manual states 500 series. I'm also having the same z-wave network delay/unresponsiveness issue that I had with the other plug.