ANSI
SELECTING YOUR HIGH PERFORMANCE FLASHLIGHT
ANSI/NEMA FL1 Standard for Flashlight Basic Performance
The ANSI/NEMA FL1 Standards address six different performance measurements and establishes consistent definitions and simple icons used to report the following performance measurements:
There are four performance criteria that could change with multiple modes or settings on the light: light output, run time, beam distance and peak beam intensity. Each manufacturer can choose what information to display in a table. Columns represent the modes available on the flashlight.
LIGHT OUTPUT: Total projected light output with new batteries
PEAK BEAM INTENSITY: Intensity of projected beam, unaffected by distance
RUN TIME: Amount of time elapsed prior to battery replacement
IMPACT RESISTANCE: Designates impact resistance when dropped
BEAM DISTANCE: Distance flashlight beam projects
WATER RESISTANCE RATING: Two different icons based on water protection level
IPX4: Water Resistant
IPX7+: Waterproof