I have had a number of these units for several years and when they work they do a good job and save electricity. However, a number of the units have failed to operate correctly. The remote will turned them on or off but it does not interrupt the flow of current, making them useless.
I have tried to contact the supplier by both e-mail and telephone without any reply. Only the sales part of the web site seems to be operating. The 2 star rating is designed to reflect the instability of the units and the lack of contact ability.