Frequently Asked Questions - A2T NT-120S Operating Manual

Rfid card access control
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10.Frequently asked questions

Symptom
After the lock is opened. there
are 8 short beeps
The can reading distance is
short or card cannot be read
After reading card. there are 3
beeps and lock is not open
The enrolled card cannot open
the door
Press[#] + [programming pin]
there is long beep and cannot
enter the programming mode
Press[#] key, there is a long
beep and cannot enter the
programming mode
Press[5], there are 3 beeps
Press[5] + [index code] 3 beeps
Press[5] + [index code] 2 beeps
+ [presenting card] 3 beeps
Under the programming mode
has not operated, the controller
exit programming mode
Possible wrongs and solutions
The controller needs higher voltage; the
power supply should be checked
1.The controller puts in the metal surface,
adjusts the controller position
2.The electric current insufficient supply,
adjusting power source
1.It's in card + pin mode
2.[#] key is pressed wait for 5 seconds to
present the card
Check if the door sensor is in alarm status.
Disable the door sensor alarm
Other keys are pressed befor pressing the [#]
key, Keep on pressing [#] key after ong beep.
Then enter the programming mode again.
Other keys are pressed befor pressing the [#]
key, Keep on pressing [#] key sfter ong beep,
then press the [#] key again
The controller has full card capacity
This code was already used, must press [5] +
[3 codes] to operate
This index code is in used, select another
index code.
In programming mode, if there is no input in 20
seconds, the controller exits programming

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