Chapter 4 Sound Prompt and Indicator
After the card reader is powered on, LED status indicator will turn green and flashing for 1 time.
Then it will turn red and flashing for 3 times. At last the buzzer will send out a beep sound
indicating the starting up process is completed.
When using the card reader, it will send out different sounds prompt and the LED indicator on it
will have different statuses. You can refer to tables below for detailed information.
Table 4-1 Description of Prompt Sound
Sound Prompt
Description
One Beep
Presenting card prompt
Pressing keys prompt
Prompt of pressing key for too long time when inputting card
No.
Time out prompt for pressing keys or presenting card.
For authentication: prompt for entering the password after
presenting the card.
Two Rapid Beeps
The operation of pressing keys or swiping card is valid.
Three Slow Beeps
The operation of pressing keys or swiping card is invalid.
Rapidly Continuous Beeps
Prompt for tamper-proof alarm.
Prompt for buzzer alarm.
Slowly Continuous Beeps
The card reader is unencrypted.
Table 4-2 Description of LED Switch
LED Indicator Status
Description
Flashing Green for 1 Time and
Flashing Red for 3 Times
The card reader is power on.
Flashing Green
For Card + Password authentication: prompt for entering the
password after presenting the card.
Solid Green for 2 s
The operation of pressing keys or presenting card is valid.
Solid Red
Card reader is working normally.
Flashing Red for 3 Times
The operation of pressing keys or presenting card is invalid.
Flashing Red
For RS-485 protocol: Registering failed or card reader is offline.
DS-K1108AD Series Card Reader User Manual
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