ZPT200 and ZPT1000 provide the means of transferring electrical power and data from the frame to the door in a secure and discreet manner. The unit mortices into the edges of the door and frame and is completely concealed when the door is in the closed position. They are of all-metal construction including backboxes and there are no plastic parts. They are ideal for use in heavy traffic or high abuse situations, and are UL/ULC Listed for use on fire doors in the USA. They are packaged individually with fasteners for wood, steel or aluminium doors and frames. They are not suitable for doors hung on swing-clear projecting hinges and offset pivots or centre hung doors on pivots.