Abstract: A door security system for use with a residential door having a lock according to the present invention includes a keyless entry device configured to attach to a door in electrical communication with the door lock. The system includes a monitoring unit having a motion sensor, a camera, an audio device (e.g. a doorbell) and a processor in data communication with the motion sensor, camera, and keyless entry device. The system includes programming that when executed by the processor causes the processor to activate the camera when the motion sensor detects motion or when the audio unit (e.g. a doorbell) is activated. The system includes programming that causes the processor to selectively activate the keyless entry device to unlock the door lock.