Door locking system

A locking system for a door, comprising:

• a doorknob a first plate;
• a deadlocking plunger;
• a spindle operably coupled to the deadlocking plunger, the spindle including a second plate;
• a knob collar that is rotatably fixed relative to the doorknob;
• a rotator collar that is rotatably fixed relative to the spindle, the knob collar engages the rotator collar such that it is rotatably fixed relative to the rotator collar in an unlocked condition and being rotatable relative to the rotator collar in the locked condition, wherein engagement of the second collar with the first collar is effected via a selectable operation including a primary locking mechanism and a secondary locking mechanism,
• wherein the primary locking mechanism includes:
• an electrical actuator that causes the first plate and the second plate to be magnetically attracted to one another when actuated such that rotation of the doorknob effects a corresponding rotation of the spindle;
• and
• wherein the secondary locking mechanism includes:
• a detent that is formed in the knob collar and an aperture that extends through the rotator collar;
• and
• a pin that is translatable through the aperture to be disposed in the detent of the knob collar, when the secondary locking mechanism is in an unlocked condition, such that the knob collar and the rotator collar are rotatably fixed to one another.