Allen-Bradley 2755-HDG-4 User Manual page 10

1-2 Scanner Features
Scanner Features
The scanners use a low power visible (red) laser diode for scanning. The
trigger turns on the laser which scans a label at approximately 36 scans
per second.
The laser beam:
-exits through the scan window
-reflects off the label back through the window
-is detected by a sensor in the scanner
When a label is read, the laser beam is automatically turned off until the
trigger is pressed again. If no label is read, the laser beam automatically
turns off after 0.5 to 3 seconds (timeout is adjustable) and remains off
until the trigger is released and pressed again.
Note: When used with the adjustable stands (Catalog No.
2755-HFN-K1, -K2), the scanner operates automatically for hands-free
operation. Refer to Appendix B.
Publication 2755-6.2
LEDs
Cable Connector
Trigger