Special versions on requeste.g.: Bolt monitoring with a single or double-throw pre-locked bolt. Functional description: Actuation of the lever handle on the shoot bolt lock causes the shoot bolt rods to be retracted into the shoot bolt lock. At the same time, a blocking mechanism is pushed into the bolt cut-out of the shoot bolt lock. The shoot bolt rods are pushed out of the shoot bolt lock by spring pressure after actuation of the lever handle and the blocking mechanism in the bolt cut-out retracted. Only when the inactive leaf is fully locked can the bolt of the active leaf lock be pre-locked. The electric door opener releases the latch of the unlocked active leaf lock when actuated. In the event of a power failure, the electric door opener is mechanically overridden. In this case, both the active and inactive leaves can be opened.