Block lock with PinCode keypad (4-eye principle) - VdS shunt lock

Structure

  • The old block lock in the door is shut down.
  • The existing PIN code keypad is retained.
  • The PIN code keypad closes a potential-free contact in the burglar alarm system.
  • The separate antenna of the activation unit is separated by this potential-free contact (blue wire) in the idle state.

Procedure

  1. Employee 1 enters a valid PIN.
  2. Potential-free contact closes and separate antenna is "connected" to the activation unit.
  3. Employee 2 switches on the alarm system with an authorised transponder.
  4. Activation unit sends deactivation command to deactivation units.
  5. Deactivation units deactivate locking devices. It is no longer possible to enter the secured area.
  6. Activation master receives deactivation acknowledgements and sends activation command to burglar alarm system.
  1. Burglar alarm system activates the alarm system and acknowledges activation.