A seed delivery device including a frame defining at least one seed chamber. When the spatial characteristics do not exceed the first condition, it is determined that the touch region is caused by a finger. The output of a data value by the transmitter unit of one module to another module at the serial data bus, and the import of the data value by the receiver unit of the corresponding other module are initiated by slopes of the clock signal. One end portion of a wire 11w of the main coil 11A and one end portion of a wire 12w of the sub-coil 12A are joined to each other.