: A popular sensor module used with microcontrollers (like Arduino) to measure the electrical activity of the heart (ECG/EKG).
: A digital multimedia container format most commonly used to store video and audio. 8232mp4
However, based on common tech terminology, you might be looking for information related to one of the following: : A popular sensor module used with microcontrollers
It seems there might be a typo in your request, as there is no widely known technology or product feature specifically named "." based on common tech terminology