Provide 15 watts of continuous power handling with superior intelligibility and efficiency with Atlas Sound APF Series Omni-Purpose loudspeakers.Vandal-resistant units are designed for flange or recessed mounting to panels, interior/exterior walls, or ceilings.Metal construction withstands adverse temperatures, humidity and physical abuse. For flexibility and optimum adjustment convenience, transformer-equipped Model APF-15T includes the Vari-Tap Control/connect center with 7 position, wattage/impedance selection switch.