I got three more plugs and they all show both voltage and power so it seems my first plug needs replacing.

Maybe zero voltage is a clue?

I recently got a RaZberry2 and hooked it up with a Rasberry 2B, I tried Z-Wave.me, OpenHAB and Domoticz and found Domoticz to best fit me. I also got a TZWP-102 and that is the only Z-Wave device I have, it works fine on all accounts except the energy meter which is way off. I noticed that it was ...