Denso BHT-100Q - Manual (Page 21)

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Chapter 1. Quick Guide
• Before reading bar codes, clean those labels if stained.
• Avoid using the BHT in direct sunlight. The BHT might fail to read correctly.
• To read bar codes on curved surfaces, apply the BHT to the target bar code so that the
code comes to the center of the scanning range indicated by the laser beam.
• When you pull the bar-code reading window away from bar codes, the actual
scanning range will become narrower than the range covered by the laser beam.
• Do not use the BHT in the vicinity of personal or amateur radio equipment. The
BHT may malfunction.
The light intensity of the laser light or illumination LED will vary depending
upon the scanning conditions and variation of their elements.