An image capturing device includes an optical lens, an imaging unit, a filter module, an infrared cut-off filter, a processing unit and a switching module. The filter module is located between the optical lens and the imaging unit. The infrared cut-off filter is provided on the filter module. The processing unit includes a first general-purpose input/output (GPIO) pin and a second GPIO pin. The switching module is coupled to the first GPIO pin and the second GPIO pin. When a first GPIO signal is in a first value, the switching module drives the filter module to move the infrared cut-off filter to an imaging optical path between the imaging unit and the optical lens. When a second GPIO signal is in the first value, the switching module drives the filter module to move the infrared cut-off filter away from the imaging optical path.