A neighbour had all is barn burned to the ground complete with all his tractors and equipment. They were worried about arson but they think it was the mains energiser. Fortunately NFU have been quick to pay out but if it was me I would pay the extra for a UK sold one. I treated my self to an all singing dancing one that you can switch off remotely, tells you when the power goes off or the voltage is down. Not cheap but when you do not live on site its been a godsend.