An object of the present invention is to provide a sensor unit that can detect a wide range of physical quantity changes with a higher degree of freedom than in the conventional art and is capable of reporting detection information, and a multiple-type sensor using the sensor unit. A flow sensor in the present invention includes a board, a sensor that is arranged on the board and detects a physical quantity change, a plurality of external connection terminals that are electrically connected to the sensor, and a reporting part that reports detection information of the sensor to the outside. In the present invention, a wide range of physical quantity changes can be detected with a higher degree of freedom. Connecting a plurality of sensor units enables use for various applications.