Honeywell Xenon 1902 Quick Start Manual page 10

Trigger
The following bar codes will allow you to use the scanner in Manual
Trigger - Normal Mode (need to press the trigger to read) or
Presentation mode (the scanner is activated when it "sees" a bar
code).
Manual Trigger - Normal
(Default)
Presentation Mode
Streaming Presentation™
When in Streaming Presentation mode, the scanner leaves the scan
illumination on all the time and continuously searches for bar codes.
Streaming Presentation Mode