An electric strike having two keepers arranged to pivot about respective shafts extending in a longitudinal direction, a lock lever for locking the keepers in a door-locking position, the lock lever being arranged to pivot about a second shaft extending in a direction that is transverse to the longitudinal direction and parallel to the backside of the strike; and an actuation mechanism for actuating the lock lever. The keepers form side walls of a bolt cavity and are arranged to pivot between a door-locking position and a door-releasing position. Therefore, the bolt may exit the cavity in two directions, e.g., a first direction for a left-handed closure member and a second direction for a right-handed closure member. The strike can thus be mounted in the same orientation for both left-handed and right-handed closure members.

An electric strike having a keeper arranged to pivot about a shaft extending in a longitudinal direction, a lock lever for locking the keeper in a door-locking position, the lock lever being arranged to pivot about a second shaft extending in a direction that is transverse to the longitudinal direction and parallel to the backside of the strike; and an actuation mechanism for actuating the lock lever. The strike is provided with a bearing element arranged to bear against the lock lever. The bearing element acts as a stop against possible lateral motions of the lock lever. Such motions may be induced by trying to force open the door lock when the lock lever is in the locking position. By providing the bearing element, it is avoided that the forces due to these lateral motions are exerted onto the second shaft that connects the lock lever to the strike.

An inline motorized lock drive is mountable within a lock housing to drive a sliding locking element between a locked and unlocked position. The lock drive includes a reversible motor having a shaft with an auger thereon to drive a lock spring, which drives the locking element. The sliding motion of the locking element is axially aligned with the motor axis to substantially reduce friction. The lock drive is preferably modular and emulates a solenoid lock drive with a control circuit. The control circuit is connected to drive the motor is switchable to default to a locked position or an unlocked position and emulate a “fail safe” or a “fail secure” type solenoid lock drive. The control circuit operates on 12 or 24 volts to replace solenoid locks of either voltage and stores power when power is applied, then uses the stored power to return the lock drive to the selected default state when power is removed.

The present disclosure discloses a portable dismantling structure for a smart doorbell, including a doorbell main body; the doorbell main body is provided with a front shell and a cover plate; the front shell is provided with a main control panel and an unlock mechanism; the main control panel is connected to the unlock mechanism in a control manner; the unlock mechanism is provided with a first elastic clasp; and the cover plate is provided with a second elastic clasp matched with the first elastic clasp. To achieve locking, the second elastic clasp of the cover plate is pushed into the front shell to fasten the second elastic clasp with the first elastic clasp to achieve fastened locking of the cover plate and the front shell.

An electronic lockbox uses a rotary actuator with multiple positions to achieve multiple locking states. Multiple positions of the actuator are detected, using optical sensors. The locking mechanism includes an outer sleeve and an inner cylindrical barrel that are coupled with torsion springs. The lockbox has a shackle and a key bin that are retained by the inner barrel when in the locked state, and the barrel can be rotated to either release the shackle or to release the key bin that typically holds a building's key.

An electronic lockbox uses a rotary actuator with multiple positions to achieve multiple locking states. Multiple positions of the actuator are detected, using optical sensors. The locking mechanism includes an outer sleeve and an inner cylindrical barrel that are coupled with torsion springs. The lockbox has a shackle and a key bin that are retained by the inner barrel when in the locked state, and the barrel can be rotated to either release the shackle or to release the key bin that typically holds a building's key.

An access control device generally includes an electromechanical actuator operable to transition the access control device between a locked state and an unlocked state, an energy storage device operable to store electrical power from a power supply, and control circuitry. The control circuitry is configured to direct a first electrical power from the energy storage device to the electromechanical actuator in response to one or more first criteria. In a fail secure mode, the first electrical power is configured to cause the electromechanical actuator to transition the access control device to the locked state. In a fail safe mode, the first electrical power is configured to cause the electromechanical actuator to transition the access control device to the unlocked state. Certain embodiments further include a user-adjustable switch operable to transition the control circuitry between the fail secure mode and the fail safe mode.

A locking device including: a locking pin movable in a linear direction; a tappet movable in the linear direction; and a clamping device connecting the tappet to the locking pin. Wherein the clamping device having an inner spring and an outer spring arranged coaxially relative to each other in the linear direction, and the inner spring is at least partially surrounded by the outer spring in a radial direction orthogonal to the linear direction.

An electronic lockbox includes a latching apparatus that uses a rotary actuator with multiple positions to achieve multiple locking states. Multiple positions of the actuator are detected, using optical sensors. The locking mechanism includes an outer sleeve and an inner cylindrical barrel that are coupled with torsion springs. The lockbox has a shackle and a key bin that include latch pins which are retained by the inner barrel when in the locked state, and the barrel can be rotated to either release the shackle or to release the key bin that typically holds a building's key. During insertion of a latch pin into the rotatable barrel, a first interior protrusion is sufficiently wide such that after the first latch pin has been inserted into the barrel and has become latched, the first latch pin does not unlatch itself as the second latch pin is inserted and rotates the rotatable barrel during the second latch pin insertion.

An electronic lockbox uses a rotary actuator with multiple positions to achieve multiple locking states. Multiple positions of the actuator are detected, using optical sensors. The locking mechanism includes an outer sleeve and an inner cylindrical barrel that are coupled with torsion springs. The lockbox has a shackle and a key bin that are retained by the inner barrel when in the locked state, and the barrel can be rotated to either release the shackle or to release the key bin that typically holds a building's key.