When dealing with the blood pressure issues, managing blood pressure at home is as important as going to the hospital. However, it is not easy to have a habit of measuring blood pressure at home spontaneously. This product is designed to help people monitor daily blood pressure in the morning guiding users’ actions by turning the alarm on and off into measuring the blood pressure. This paper shows a design process for developing a blood pressure monitor to form a habit of blood pressure management at home, suggesting the entertaining swing structure to the switch modes of the product.