This is a driver for the Aeotec Heavy Duty Smart Switch (https://aeotec.com/outdoor-z-wave-switch) model ZW078. It's a port of the Smart Switch 6 code with appropriate functions add/removed. You can safely use the built-in HDSS driver for this device, but there were a couple of functions missing and I didn't like having dimmer and color settings on the switch controlling my dryer, even if the device would ignore those commands.
Edit 5/14/19: (This is now a whole new device driver since my original post)
Edit 6/12/20: I'm no longer on HE, so this driver is unsupported. I will say that no combination of my driver or the from-scratch drivers by syepes ever did get me what I felt was consistent power reporting with the HDSS, unlike the perfect reporting I got from my ZEN15's. I don't know if that's a problem with Hubitat or with the HDSS. I did resort to putting in a Rule Machine rule to poll the device every minute, and that seemed to get things "good enough" (I only used the HDSS for reporting power usage to monitor laundry).