The Internet of Things (IoT) concept is one of the most popular concepts that can be applied from simple things to the smart appliances of today. IoT also helps human life to be more convenient and easier. IoT for learning and teaching in higher education is so important to help students gain their knowledge and experience before graduation and industrial work. An Introduction of IoT course for undergraduate students mostly focuses on the IoT concepts and fundamentals which may affect learners to understand well about the concepts. To apply those concepts into practice is still quite difficult for learners. This article proposes the development of a learning kit for the Smart Transformer Detection System using IoT as teaching material. The capability of this tool can help learners automatically detect and notify events using online tools. Moreover, it helps students monitor the transformer system with IoT concepts more clearly, practically, and understandingly. The study volunteered a sample group of students who used this kit in their learning and practices. Then, the sample did a survey on learning satisfaction. The results show that students were very satisfied with both accuracy of the work system and the quality of the learning kit.