Intelligent door lock system with reduced door bell and camera false alarms

An intelligent door lock system, comprising:

• a sensor at a dwelling, the sensor being coupled to a drive shaft of a lock device to assist in locking and unlocking a lock of a lock device at a door, the sensor configured to know its current position even if it has been moved since it has been turned off to provide that the position sensor will always know its current position relative to the lock device;
• an engine, an energy source and a memory coupled together, the engine being coupled to the sensor, an energy source, the memory providing information relating to open or closed status of a door to a dwelling occupant or a third party designated by the dwelling occupant;
• at least one motion detection device to detect a person at or near a door or window at the dwelling;
• a security system that includes a camera coupled to the motion detection device to take a picture of an image of the person or an outline of the person, wherein in response to the motion detection device detecting a person at or near a door or window at the dwelling the camera takes a picture of an image person and provides a notification to the dwelling occupant or the third party designated by the dwelling occupant;
• and
• a device that converts energy into mechanical energy coupled to the positioning sensing device and the drive shaft, the device that converts energy being coupled to the energy source to receive energy from the energy source.