... For the control at home. The unit is well made and the price / performance ratio is convincing. One should, however, necessarily the side THREE read the instructions and be aware that you do not sit with the doctor before the product titled as 'waste'. I can adequately perform the measurements are satisfactory. As I said, for the control at home OK, and found myself as acceptable I would like to thank for the excellent customer service of Avides Media AG where I purchased the product.