Chapter 4 Fill Light and Positioning
4.1 Fill light
There is a set of LEDs on the reading module specially equipped for shooting and reading, providing
auxiliary supplementary light, illuminating the beam on the reading target, improving the reading
performance and adaptability in weak ambient light . You can set according to actual usage conditions :
Fill light - light on when taking pictures : fill light is on when shooting, and goes out at other times .
Fill light - always on : The fill light will continue to glow after the reading module is turned on .
Fill light - always off : the fill light does not light up under any circumstances .
**Fill light - lights up when taking pictures
Fill light - always on fill light - always off
4.2 Positioning
There is an auxiliary positioning device on the reading module, which projects an indicator line when
shooting and reading, prompting the user to read the center of the scene image captured by the module .
when taking pictures : the positioning light is on when taking pictures, and is off at other times .
The positioning light is always on when taking pictures: The positioning light is always on when
taking pictures, and is off at other times.