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  • There are six types of locks in 2N® IP Intercom accessories:
    1. 932071E BEFO 11211 12V / 230 mA DC
    2. 932081E BEFO 11221 12V / 230 mA DC with momentum pin
    3. 932091E BEFO 11211MB 12V / 230 mA DC with mechanical blocking
    4. 932061E BEFO 211211 door signalling, low consumption 12V / 230mA
    5. 932072E BEFO 31211 fail-safe 12V / 170mA DC
    6. 932062E BEFO 321211 fail-safe, door signalling 12V / 170mA

Type a   this is ordinary electric lock that is opened by connecting 12V to its terminals - it stays unlocked until voltage is present

Type b  – this lock is opened by 12V on its terminals, but it stays opened even when voltage is disconnected. It stays unlocked till somebody went through the door – so it can be unlocked only by short voltage impulse

 

Type c  this lock is the same as type 1, but there is mechanical switch on its body that allows to unlock it permanently

 

 

Type d - a regular lock with a built-in contact to indicate whether the door is open or closed.

Type e - the failsafe lock is closed when electricity is switched on. When electricity is interrupted, the lock is opened.

Type f - the failsafe lock is closed when electricity is switched on. When electricity is interrupted, the lock is opened. It contains a built-in contact to indicate whether the door is open or closed.