10 HH492 User Guide
• Do not store batteries near fire or other high temperature locations.
• Do not store or carry batteries together with metal objects.
• Do not expose batteries to water or allow the batteries to get wet.
• Do not connect (short) the positive and negative terminals, of the batteries, to 
each other with any metal object.
• Do not pierce, strike or step on batteries or subject batteries to strong impacts or 
shocks.
• Do not disassemble or modify batteries. 
 
Beeper and LED Sequences and Meaning
The scanner contains an LED ring on the back of the unit that indicates linking 
status, decoding state, and battery condition. The base has LEDs on the top of the 
unit that indicate its power up condition: red LED = error; green LED = success of 
any type. Scanners have audible indicators as well: 1 razz or error tone = error; 2 
beeps = menu change; 1 beep = all other successes.
Scanner LED Sequences and Beeper
Base LED Meaning
Caution:   Danger of explosion if batteries are incorrectly replaced. 
Dispose of used batteries according to the recycle program for 
batteries as directed by the governing agency for the country 
where the batteries are to be discarded.
LED  Beeper  Indication
Normal Operating 
Red, on None Battery low
Green, flash 1 beep Successful communication or linking
None Razz or error tone Failed communication or unlink
Green, flash, 1s on, 1s off None Pre-charge or charging
Green, on continuously None Charge done
Red, flash, 1s on, 1s off None Charge error
Menu Operating
Green, flash 2 beeps Successful menu change
Red, blinking Razz or error tone Unsuccessful menu change
LED Indications Cause
Green, on continuously Base power on successfully