Solenoid bolts are an ideal security solution where the use of other electric locking products is impractical. Solenoid bolts can be suitable for a range of door configurations including sliding doors and single or double action swing doors. Their versatility means that they can be fitted to either the frame of the door or morticed into the door itself, offering the user a concealed and slim line option for door security. A sensor on the locking device detects when the door and lock correctly alignment and throws the bolt which secures the door. When power is removed or provided, depending on the application, the bolt retracts and allows for safe passage through the door.