Patent ID: 8454063

Claim:
A mode-switchable door strike switchable between a fail-safe mode and a fail-secure mode, comprising: a) a housing having an opening for admission and retraction of a door bolt; b) a keeper arm movably attached to said housing, and movable between a closed position wherein said opening is occluded and an open position wherein said door bolt may be released from said opening; c) a transmission lever pivotably attached to said housing for selectively engaging said keeper arm and being rotatable to selectively lock and unlock said keeper arm in said closed position; d) an actuator connected to said housing; e) a release lever rotatably attached to said housing at a first point and engaged with said transmission lever at a second point to selectively lock and unlock said transmission lever by rotation of said release lever by said actuator; and f) a stop alternatively mountable in one of at least two positions adjacent said release lever, wherein a first position of said stop limits rotation of said release lever in a first rotational direction when said actuator is de-energized, and wherein a second position of said stop limits rotation of said release lever to a second rotational direction opposite said first rotational direction when said actuator is energized, therefore allowing the door strike to switch between said fail-safe mode and said fail secure mode.