Juniper Allegro CE Owner's Manual page 253

The User tab allows you to select which key your Allegro will use to
initiate a scan, and if you want audio and/or visual confirmation if a
scan is successful or not.
Only one Allegro key is used to both target and scan a bar code.
Pressing on the scan key initiates the target beam first. The target
beam stays on for a set time ranging from 0.0 to 9.9 seconds. You have
the ability to set the target time, see later in this section. As soon as the
target beam turns off, the scan beam turns on. The scan beam remains
on until a valid scan is completed or until the maximum scan time is
reached.
❖ Note: Holding the Scan Key down during a scan or pressing it multiple
times during the scan does not affect the scan. The key presses are ignored.
Scan Key Selection
The Scan Key box allows the user to select which key is pressed to
initiate a scan. To select the Scan Key you want to use, tap on the
down arrow on the right side of the Scan Key box to access a drop-
down menu listing all the available scan keys. Tap on the name of the
key you want to use for scanning.
Expansion Pods Page 8-15