Just picked up on of these from Jaycar the other day…
I’ve always wanted one – it lets you see how much power different electrical devices are using in your house.
The biggest shock was the digital set top boxes. All 3 that I have use the same amount of power on and when on ‘standby’ – around 60 watts.
It’s borderline criminal IMHO when companies make devices that do this sort of crap.
You can find out more about this device here.