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Tactical Flashlight User's Guide
for the
Ra Every Day Carry™ and Ra Clicky™
Copyright February 2009 by Ra Lights. All rights reserved.
Congratulations for purchasing the finest flashlight available. The Ra
Every Day Carry (EDC) and Ra Clicky Tactical flashlights are
best-of-class flashlights providing regulated output at the desired
brightness for extended periods. A single button easily selects the
desired light output. You can customize your flashlight for added
utility. Lithium-ion rechargeable batteries are fully supported and
recommended for lower operating cost. And your flashlight is built
tough to provide a lifetime of dependable service.
Introduction
You can maximize battery life by selecting the optimum amount of light
for your task. Too much light wastes battery life while too little light
makes it difficult to see. The 4 brightness settings were selected for
maximum utility. You may customize them if desired.
Burst output takes advantage of how your eyes work and the practical
need for very bright light to provide maximum performance while
preserving long battery life.
Your flashlight may be customized to perform special tasks more
efficiently. These customization features allow you to build a
specialized flashlight optimized for the tasks you perform on a regular
basis – and even tasks you rarely perform.
Your eyes respond to light in a logarithmic manner. This means that if
you reduce the amount of light by half, your eyes perceive the change
as a small decrease in brightness. The internal brightness levels on
your flashlight are visually spaced so you will see a very small change
in brightness between the levels. Every decrease of two brightness
levels doubles the battery life while appearing to be a small change to
your eyes.
