Wall-mounted 100V line speakers with a wooden cabinet and metal grille. Fitted with a high quality full range driver. Removable rear panel for easy fitting to the wall using two screws. Good music and speech reproduction. Connection to 100V network and level trimming by means of spring terminal. Wall mounted speaker stock no 690-3700 is fitted with a volume control.,Typical applications include public areas, schools, hotels, surgeries for announcements and background audio