The Patton Model ADP-2982 are stand-alone wall or shelf mountable loudspeaker units. Each unit houses and powers an 8-inch speaker. The ADP-2981 also contains a strobe annunciator, useful for areas with high background noise or those with hearing difficulties. A knob on top of the unit controls the volume threshold that the audio must exceed for the strobe to flash.
Each ADP unit is equipped with an AC line-powered supply to drive the amplifier and supply DC power to an attached FOI module. These are recommended for use with the FiberPlex FOI series FOI-2981 for line level or the FOI-2983 for 70V audio. These FOI units then transmit the signal via a fiber optic link to a FOI-4982, conveniently housed and powered by an ADP unit. From there the FOI-4982 drives up to 10 ADP units in a daisy chain. See the FiberPlex FAK for pre-bundled Annunciator packages.
