Functions : constant on -strobe-Dimming
1 High power: quick press the switch one time when the light is off, the output will reaches it's maximum.
2 Strobe  :Double click the switch within 0.5 seconds when the light is off, it reaches its strobe mode ,**0% brightness.
3.Dimming . press the switch longer when the light is off,, the output change from high power to low power , release the switch to keep the desired output. Longer press the switch again; the output will change to high power. That's so called high output-low output-high output recycle. The time pause is 3 seconds between **0% and 1%