Useful gadget
This does what it says on the tin. Monitors your electricity usage, and the amount generated by your solar panels. It also has a combined setting, which shows your net gain or loss, with a traffic light system. If you connect it via USB to a computer, you can get a continuous graph of electricity in and out. You can print out a daily totals as well, or export to Excel.
A few minor negatives.
The USB lead is not included, and is not a standard B type USB connector, so has to be bought separately.
Although the instructions are clear, it does help to have a basic knowledge of home electrics.
The software is a little clunky. For example, if the computer goes into sleep mode, the computer stops monitoring, and the time axis does not record this correctly.
You can only get a continuous graph of usage and generation if you leave your computer switched on. Mine uses several hundred Watts, so rather defeats the energy saving purpose.
Verified purchase: YesCondition: New