EN54-24 certified 20W horn wall speaker, suitable for quality reproduction of announcements in those places where a high acoustic performance is required. ABS body with round bell, equipped with a “U” adjustable bracket, for an easy mounting, both indoor and outdoor. Complete with line transformer with selectable power for better sound level regulation. Dual cable gland and dual ceramic terminal block for 100V signal input and output and thermal fuse for exclusion from mains line in the event of temperatures above 150°C. Particularly suitable for emergency announcements.