ACR1255U-J1 – Reference Manual
Version V1.01
www.acs.com.hk
Page 13 of 73
4.5.3.
Status LED
ACR1255U-J1 has two bi-color LEDs to show the various operation statuses, where:
Figure 5
: LED Operation Status
Mode
Color
LED Activity
Status
Bluetooth
Mode
Blue
(LED1)
Off
Reader is powered off
No Bluetooth device paired
Reader is in USB mode
Slow flash v1
The paired Bluetooth device is authenticated successfully and
is waiting for instructions
Slow flash v2
Bluetooth device is paired, card polling is on and no card is
present
Fast flash
Data is being transferred between the reader and paired device
Fast – Slow flash
Powered on
Searching for devices to be paired with
On
Bluetooth device is paired with the reader
Card is present
Red
(LED2)
Off
Battery is fully charged
Reader is powered off
The voltage of the battery is greater than 3.5 V and no USB
powered is being supplied
Slow flash
Low battery
On
Battery is charging
USB mode
Green
(LED2)
Off
Reader is powered off
Slow flash
No card presented and the reader is waiting for instruction
Fast flash
There is read/write access between the smart card and reader
On
Card is present and the reader is waiting for instruction
Orange
(LED2)
On
Device is powered on
4
LED is on for 500 ms, off for 500 ms
5
LED is on for 200 ms, off for 1800 ms
6
Green and Red both turned on
LED1
LED2
•
Blue -
Bluetooth Status
•
Red -
Battery Status
•
Green –
USB
