If you're into true DIY, take a look at how to build your own with an ESP8266 or similar. I use dual relays for our Bearded Dragons heat lamps based on this architecture. Knock on wood, they have NEVER failed! They are IP based and not Z-Wave or Zigbee, but integrate perfectly with Hubitat. The Instructable below is from back when we were still on ST, but all still applies now to HE.