A module comprising: a charging circuit comprising an electric storage element, a power generation element that charges the electric storage element, and a driving unit driven by the electric storage element of the charging circuit; wherein the power generation element is a dye-sensitized photoelectric conversion element, an amorphous Si photoelectric conversion element, a compound-semiconductor thin-film photoelectric conversion element, or an organic thin-film photoelectric conversion element, and wherein the power generation element is a photoelectric conversion element, and in an environment in an illuminance range of 50 to 2000 Ix, the power-generating voltage of the photoelectric conversion element is kept 60% or more with respect to the power-generating voltage of the photoelectric conversion element at 2000 Ix; and the electric storage element is a secondary battery comprising a lithium-transition metal oxide in a positive electrode active material layer, and comprising a lithium-titanium oxide of spinel-type crystal structure in a negative electrode active material layer; wherein a power-generating voltage of the power generation element has a value equal to or more than a charging voltage of the electric storage element, and wherein the driving unit has an operating voltage equal to or less than the charging voltage of the electric storage element, the power-generating voltage of the power generation element referring to an open voltage between positive and negative terminals of the power generation element, which is generated when the power generation element is located in an environment where an energy source is present, and the charging voltage of the electric storage element refers to a difference between the potential of releasing lithium ions at the positive electrode and the potential of storing lithium ions at the negative electrode; the driving unit comprises a sensor that measures at least one of infrared, magnetism, temperature, humidity, atmospheric pressure, flow rate, illuminance, light, sound waves, odours, and tactile; and the driving unit comprises a radio communication unit, and a microcomputer, the microcomputer having a storage unit, and a control unit that controls the sensor, the radio communication unit and the storage unit; wherein the microcomputer controls the module depending on the power obtained from the power generation element in order to operate the module in an intermittent manner. a charging circuit comprising an electric storage element, a power generation element that charges the electric storage element, and a driving unit driven by the electric storage element of the charging circuit; wherein the power generation element is a dye-sensitized photoelectric conversion element, an amorphous Si photoelectric conversion element, a compound-semiconductor thin-film photoelectric conversion element, or an organic thin-film photoelectric conversion element, and wherein the power generation element is a photoelectric conversion element, and in an environment in an illuminance range of 50 to 2000 Ix, the power-generating voltage of the photoelectric conversion element is kept 60% or more with respect to the power-generating voltage of the photoelectric conversion element at 2000 Ix; and the electric storage element is a secondary battery comprising a lithium-transition metal oxide in a positive electrode active material layer, and comprising a lithium-titanium oxide of spinel-type crystal structure in a negative electrode active material layer; wherein a power-generating voltage of the power generation element has a value equal to or more than a charging voltage of the electric storage element, and wherein the driving unit has an operating voltage equal to or less than the charging voltage of the electric storage element, the power-generating voltage of the power generation element referring to an open voltage between positive and negative terminals of the power generation element, which is generated when the power generation element is located in an environment where an energy source is present, and the charging voltage of the electric storage element refers to a difference between the potential of releasing lithium ions at the positive electrode and the potential of storing lithium ions at the negative electrode; the driving unit comprises a sensor that measures at least one of infrared, magnetism, temperature, humidity, atmospheric pressure, flow rate, illuminance, light, sound waves, odours, and tactile; and the driving unit comprises a radio communication unit, and a microcomputer, the microcomputer having a storage unit, and a control unit that controls the sensor, the radio communication unit and the storage unit; wherein the microcomputer controls the module depending on the power obtained from the power generation element in order to operate the module in an intermittent manner.