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Operating instructions for 
electronic lock SELO-A

A) GENERAL

•  The opening procedure consists of two operations: CLEARING  
  and UNBLOCKING.
•  To start the opening procedure, check that the input unit is in the  
  vertical end position.
•  Each successful pressing of a key is acknowledged by the brief  
  lighting up of the KEY ACKNOWLEDGEMENT signal.
•  If the code number is keyed in by mistake, return to the starting  
  position of the lock by pressing the ON key, and start over.
•  After entering the wrong secret code three times in a row, the  
  lock will automatically block all further entries for 5 minutes... 

Electronic lock SELO-A can be set for two opening methods: either for immediate opening upon entering of one of the valid 6-digit secret 
codes or for delayed opening after a pre-programmed opening delay has lapsed. The lock is unlocked using one of a total of nine secret 
codes.

B) OPERATING THE LOCK

   ...If, after waiting for 5 minutes, the wrong code is entered again,  
  the lock will block itself for a further 20 minutes (manipulation     
  resistance). As the waiting period is in progress, the red  

 

  BLOCKED signal blinks and not even the valid number code will  
  open the lock.
•  If more than 30 seconds lapse between pressing any two keys,  
  the lock automatically switches itself off for safety reasons. The  
  opening procedure has to be started over.
•  Once data have been stored (numerical codes, opening delay),  
  not even a power failure will delete them.

READY FOR OPENING

BLOCKED

KEY ACKNOWLEDGEMENT

PROGRAMMING STATUS

DATA INPUT REJECTED

LOW BATTERIES

SERVICE CALL

Clearing the lock without opening delay 
(factory setting)

1)  Key-in the 6-digit number code 

(factory setting: administrator 

  code 1 2 3 4 5 6)

.

2)  As an indication that a valid number code has been entered 
  and the lock is ready for opening, the green 

READY FOR

  OPENING

 signal lights up for five seconds. The lock has now 

  been cleared and is ready for unblocking within this time. 
  Entering of an invalid number code will cause the red 

DATA 

  INPUT REJECTED

 signal to light up for five seconds.

or:

 Clearing the lock with an opening delay 

(between 1 and 99 minutes)

1)  Key-in the 6-digit number code 

(factory setting: administrator 

  code 1 2 3 4 5 6)

.

2)  The blinking green 

READY FOR OPENING

 signal shows that the 

  number code entered is valid. Alternating with the green light, 
  the red 

BLOCKED

 signal blinks. If the code entered is not 

  correct, the 

DATA INPUT REJECTED

 signal will light up for five 

  seconds.
3)  Wait for the pre-programmed opening delay to pass; the lock 
  cannot be unblocked in this condition. At the end of the delay, 
  the green 

KEY ACKNOWLEDGEMENT

 signal blinks for three 

  minutes.
4)  Enter the valid number code once more as the green signal is 
  on.
5)  To indicate the lock’s readiness for opening, the green 

READY 

  FOR OPENING

 signal lights up for five seconds. The user can 

  now unblock the lock.

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