EN54-24 certified 10W celling speaker, suitable for quality reproduction of announcements and background music. Painted metal body and grille, with spring clips for quick and easy ceiling mounting on flame-resistant caps. 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 150°C. Particularly suitable for emergency announcements.