TCM4 / TCM4-BLE MultiFreq card reader
JAN 2021
2.4.3
LEDs and buzzer status specification
Blue
Red
Buzzer
Signification
4
beeps
Power Up
TCM4 in
bootloader
mode
Normal operation
Blinks
on steps
A copy from host computer to storage zone of
TCM4 on USB mass storage is in progress
Blinks 2, 3
times slowly
and stays ON
A firmware’s update is done (copy of firmware
from storage zone to application zone and
firmware verification)
Blinks every
500ms
TCM4 in
application
mode
Normal operation
Blinks every
500ms
1 beep
Card detected