Abstract: A radiation transmitting or sensing element is placed in a generally elongated holder of resilient material so that, if it is distorted by an accidental impact or otherwise, it will automatically re-orient itself when the intruding force is released. The invention is especially useful in safety accessories for automatic overhead doors, garages, and the like.
Abstract: Three door managing functions, motion detection, presence detection, and image monitoring are coordinated with safety features in a single compact housing for a door. Two or more of the units may be coordinated.