Abstract: How much solar water heater to produce hot water do with the weather and season, hot water more and less to use is very inconvenient. The application of Internet of things on the solar water heater. Using RFID and the Internet technology manage the equipment to distinguish and transfer the signal. The user can know the information of water heater at any time, and according to the demand for hot water, open the auxiliary electrical heating in advance. It can also stats solar water heater temperature and information for user access through the cloud platforms. It provide data support for the research on the performance of the solar water heater.

Key words: Internet of things, Radio Frequency Identification, Cloud platform, Solar water heater