LED and Beeper Indications
Quick Reference Guide 23
LED and Beeper Indications
The reader’s beeper sounds and its top multi-colour LED illu-
minates to indicate various functions or errors on the reader. 
An optional “Green Spot” also performs useful functions. The 
following tables list these indications. One exception to the 
behaviors listed in the tables is that the reader’s functions are 
programmable, and so may or may not be turned on. For 
example, certain indications such as the power-up beep can 
be disabled using programming bar code labels.
Contaminants Spray/rain 
Dust/particulates
IEC 529-IP42 
(IP51 QD2430-E model only)
ESD Level 16 KV
Regulatory
Electrical Safety UL 60950, CSA C22.2 No. 60950, IEC 60950
EMI/RFI
North America (FCC) :  Part 15 Class B; Canada ( IC) :   ICES-
003 Class B; Russia ( Gost); European Union EMC Directive; 
VCCI-Japan; Korean KCC; Taiwan EMC (BSMI); 
Australia (ACMA); Mexico (NOM)
Indicator Description LED Beeper
Power-up Beep
The reader is in the pro-
cess of powering-up.
Reader beeps four 
times at highest fre-
quency and volume 
upon power-up.
Good Read Beep
A label has been suc-
cessfully scanned by 
the reader.
LED behavior for this 
indication is configu-
rable via the feature 
“Good Read: When to 
Indicate” 
(see the PRG for infor-
mation.)
The reader will beep 
once at current fre-
quency, volume, 
mono/bi-tonal set-
ting and duration 
upon a successful 
label scan.
ROM Failure
There is an error in the 
reader's software/pro-
gramming
Flashes
Reader sounds one 
error beep at highest 
volume.