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T24 System Manual Part 2: Access Configuration On The Keypad
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3.5  Erase All Access Privileges Of A User (Cards/PINs)
By using the red admin card and the keypad, you can erase all the access media set up 
for a specific user at once, i.e., all blue user cards and access PINs assigned to the same 
personal number. The invalidated user cards can be set up again from scratch at any time.
To invalidate all user cards and PINs sharing the same personal number, you need the 
red admin card. 
Proceed As Follows: 
1.  Procure the personal number of the user for whom keyless access is to be removed.
2.  Enter Configuration Mode: Press the OK/MENU button until you hear the second 
beep (button flashes blue). 
3.  Hold your admin card up to the keypad buttons until you hear a beep and the 
OK/MENU button lights up blue continuously. 
4.  Enter Access Configuration Mode: Briefly press the blue key button, which then 
lights up blue.
5.  Enter Erase Mode: Press the ESC/ALARM button until you hear the second beep 
(button lights up blue). 
hold (2nd beep)
OK
ESC
hold (2nd beep)










