A locking apparatus for a rollup door, comprising latch assembly including a latch, a release lever, a trigger, a cam and a solenoid. A housing that houses the latch assembly includes at least one opening that can removably receive a door striker member. The latch assembly includes a locked/unlocked status limit switch for detecting when the latch assembly is in an unlocked or locked position and an open/closed status limit switch for detecting when the striker member is disengaged from the latch assembly and door is (or can be) open or closed. The locking apparatus can be electronically unlocked or it can be unlocked manually by a user by actuating the solenoid which causes the latch to release the locked striker member.

A locking apparatus for a rollup door, comprising latch assembly including a latch, a release lever, a trigger, a cam and a solenoid. A housing that houses the latch assembly includes at least one opening that can removably receive a door striker member. The latch assembly includes a locked/unlocked status limit switch for detecting when the latch assembly is in an unlocked or locked position and an open/closed status limit switch for detecting when the striker member is disengaged from the latch assembly and door is (or can be) open or closed. The locking apparatus can be electronically unlocked or it can be unlocked manually by a user by actuating the solenoid which causes the latch to release the locked striker member.

A multi-function latch and latch bolt are configured as a pair of mechanical fastener to be installed on a gate for the purpose of holding the gate in closed position, and that a person standing on the inside of the fence can disengage the latch hook bracket from the latch bolt, or disengage the latch bolt from the latch hook bracket in any of which method to unlatch and open the gate from inside the fence even when the outside of the latch is locked. On the other hand, when the latch is not locked on the inside but locked on the outside with an incorporated lock, keyed or combination padlock; then a person standing on the outside of the gate may open the gate if he/she has an appropriate key or knows the combination codes in order to unlock, unlatch and open the gate from outside the fence.

A watertight door or window comprising a frame and a leaf mounted on the frame and arranged movably with respect thereto between an open position and closed position, and further comprising: a striker element arranged on the leaf, a locking element arranged on the frame and provided with a hook end designed to engage with the striker element so as to lock the leaf against the frame following closing of the leaf, and a striker actuating mechanism arranged on the leaf and able to be actuated when the leaf is in a closed position and the locking element is engaged with the striker element. The actuating mechanism is provided for releasing the striker element from a closed position, where the striker element is positioned inside a recess in the hook end of the locking element, to an open position, where the striker element is extracted from the recess in the hook end of the locking element. The actuating mechanism can be reset when the leaf is closed again.