A power transfer system for imparting power to at least one functional element, such as a movable glass-containing functional element, such as a sliding glass door. The power transfer system preferably includes a magnetic induction power transfer mechanism with a power transfer circuit having first and second separated coils, and a resonant circuit power driver having a resonant frequency. The power transfer mechanism is designed to apply power to the functional element and/or to other devices or systems connected to it. The power transfer system may include an electronic feedback mechanism with an electronic feedback circuit for sensing a predetermined condition concerning the functional element. To take one example, the electronic feedback circuit may be used to provide safety door detection feedback by sensing the position of a movable glass portion of sliding glass doors, and by relaying a feedback signal, which may be carried by a light wave, to the power transfer mechanism if the movable glass portion of the doors is determined to be in a closed position. A data link may be used to communicate information between the power transfer circuit and the functional element.