What is the frequency of flashes for the flashing light?
Flashes per minute, or FPM, is simply the number of times a flashing light blinks per minute. Police and emergency vehicles use warning lights with flashing rates that typically fall in a range from 60 to 240 FPM.
What is a 1 Hz flash?
If something is occurring at 1 hertz it means that it is repeating once per second. So if we set a flash to fire at 6 hertz it means the flash is firing at a rate of 6 times per second. If we set the fire the flash at 12 hertz it means the flash is firing 12 times per second.