EN54-24 certified 20W bidirectional projector wall speaker, suitable for quality reproduction of announcements in those places where a high efficiency in a direction is required. It reduces the echoes from back and side walls, floors and ceilings. Aluminium body with painted metal grill, equipped with a wall bracket, for an easy mounting, both indoor and outdoor. Complete with line transformer with selectable power for better sound level regulation. Dual ceramic terminal block for 100V signal input and output and thermal fuse for exclusion from mains line in the event of temperatures above 110°C. Particularly suitable for emergency announcements.