Telldus TZWP-102 (Plug-in switch mini) Energy meter not correct

[realbosselarsson]

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 off on Z-Wave.me as well so it might be the RaZberry or the plug that is faulty if it's not a setting thing.

I can switch it on and off and I can see (right now with a 25W heating cable connected):
0 V (should be 230V I guess?)
836.7 Watt
21.048 kWh
1.4 A
On

Under Hardware it's listed as:
2 Razberry2 Yes OpenZWave USB Version: 1.4-3276-g43740494-dirty Setup /dev/ttyAMA0 Disabled

When I tried Z-Wave.me it was the same numbers I think.
With a 20W low energy light bulb I had 645W on that and I also tried our ventilation engine (language?) on it and it read 3,2kW when I could measure 0.4A (92W) on the wires.

Anyone tried this device or have any ideas?

Kind Regards
Alex

[realbosselarsson]

Maybe zero voltage is a clue?

[realbosselarsson]

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