Energy monitor | given to a friend. This was provided free of charge by my energy provider and when I originally requested it, it duly turned up and was installed. Then a week later a second one turned up, which I queried and returned as instructed. There is obviously something wrong with their system as this is the third one, which turned up about a month after I'd returned the second one. As they are free of charge I've passed it on to a friend who uses the same supplier.