[Q] Oxygen sensor test without finger topic

So there is always a way to test the different sensors on the galaxy models...turning them on and off...and theres the flashlight also known as the flash of the camera...i can turn the flash off and on to use it as a flashlight...is there an option to turn on the oxygen sensor led on without to cover it with my finger..the led is very strong i assume..i want to use it as a flashlight in red..is there a way to just click it on?