Patent attributes
An intelligent door lock system includes a position sensing device configured to be coupled to a drive shaft of a lock device. The position sensing device senses position of the drive shaft to assist in locking and unlocking a lock of a lock device. A processor is coupled to a wireless communication module that utilizes audio and RF communication to communicate. Audio is used to communicate a security key to the wireless communication device and the RF increases a wireless communication range to and from the wireless communication device. A circuit is coupled to the engine and to an energy source. A device converts energy into mechanical energy and is coupled to the circuit, positioning sensing device and the drive shaft. The device that converts energy is coupled to the energy source to receive energy from the energy source.
