Quick review of the Brennenstuhl PM231 energy meter.

For the first year or so it seemed to work but it started to misbehave quite quickly. Reported energy consumption was higher than I expected, because it reported higher voltage from the mains than was actually the case (it claimed over 270 V when the voltage was actually 225 V) resulting in the calculated Watts and kWH also being incorrect. I could roughly compensate for that, so I did. But then it started reporting power consumption of a few W when there was nothing plugged into it at all so it became useless for low energy devices. Finally, the always too dim and too small display recently decided to report that voltage, current, power and power factor are all zero (0). That's if it boots up at all - mostly it just sits there with all segments on.

A useless product. Don't buy one. Brennenstuhl won't fix it. Yes it's out of guarantee, but these things are used occasionally and it started going wrong a long time ago. I drilled out ridiculous three sided security screws in their products. Nothing obviously broken.

I might use the case for a DIY product as I can fit a relay in there.

#uselessProduct #brennenstuhl #productReview #energyMeter