Model S-15WR provides high-intelligibility voice reproduction and signal transmission for indoor or outdoor emergency alarm and protective signaling. Series S-15WR Supervised Horn Loudspeakers are equipped with a compression driver, providing up to 15 Watts RMS power handling capability, superior intelligibility and dispersion to achieve maximum sound projection and penetration. Weather-resistant metal construction and a reentrant acoustic path assure protection against water, humidity, vermin, and corrosion.