Oximeter click is a versatile photometric Click board™, perfectly suited for measuring the blood oxygen saturation. It employs ADPD105, a highly configurable photometric front end (AFE) device from Analog Devices. Almost all parameters of the IC are user-configurable, allowing this AFE IC to be used on a wide range of various photometric applications. It utilizes two LEDs (red and infrared), and one photodiode (PD) sensing element, making it is possible to get very accurate and reliable oximetry readings. For those who want to expand the functionality of this Click board™. It offers two headers located on the sides of the Click board™, which allow expanding it with different types of LEDs, PDs, reconfiguring its purpose that way.