An automated door lock includes a bolt and bolt housing. A lock interior part is attachable to an inside portion of a door. The lock interior part includes control logic that controls operation of automated door lock including movement of the bolt into and out of the bolt housing. A first lock plate is attachable to a door frame. The first lock plate includes a magnet. The second lock plate is attachable to a door. The second lock plate includes a sensor electrically connected to the control logic. The sensor detects magnetic field strength. The magnet is located on the first lock plate and the sensor is located on the second plate so that when the door is closed, the sensor and the magnet are aligned to maximize strength of the magnetic field detected by the sensor.