Argox AS-9500 - Manual (Page 35)

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LED
The LED indicator can not be programmed On or Off in response
to a good read. If user turned off vibrator and beeper, then the LED
indicator will be Off. But when either vibrator or beeper is ON,
then the LED indicator will remain On all the time.
Vibrator
The vibrator provides a unique feature to AS-9500 that user can
understand whether the data is well scanned and sent to Host PC
under an adverse circumstance that the beep sound may not be
heard, or a circumstance requiring extreme quiet that the beep
sounds are not allowed.
Vibrator
*On
Off