A non-touch thermometer that includes a first circuit board that has a microprocessor, a battery operably coupled to the microprocessor and a single button operably coupled to the microprocessor, the non-touch thermometer also includes a camera operably coupled to the microprocessor that provides at least two images to the microprocessor, the non-touch thermometer also includes a second circuit board that has a digital infrared sensor operably coupled to the microprocessor with no analog-to-digital converter operably coupled between the digital infrared sensor and the microprocessor, the digital infrared sensor having only digital readout ports, the digital infrared sensor having no analog sensor readout ports, the microprocessor is operable to receive from the digital readout ports a digital signal that is representative of an infrared signal detected by the digital infrared sensor and the microprocessor is operable to determine a temperature from the digital signal that is representative of the infrared signal.