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2. Product specifications
2-10. Light Sensor
Light sensor is used to measure the ambient light level in the enviroment as perceived by the human eye.
It is designed to detect bright and dim ambient light conditions as a means of controlling the brightness of a
LED display and /or keypad.
* In our product, light sensor operates only "Standard" mode.
* Eco Sensor
step1 : Read the Lux five times as the unit of 400ms.
step2 : Transfrom the taken Lux to 20 level.
step3 : Get the most frequent grade, them set up the current level.
step4 : If |current level| - |previous level| > 1 , change the level
step5 : Refresh the Backlight set-up as the 200ms.
Lux
Sensor Backlight
2-32
> 200
190
20
19
...
10
....
1
0
0
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