The ATS Series Audio Attenuator are aesthetically designed to blend into most architectural surrounding without any matching complications with other electrical fittings. The units are constructed from high impact ABS material with a white matte finish, making the units highly durable while complementing most walls’ surface finishing. Apart from its aesthetic aspects, serious thought has been put into the safety aspect of the ATS Series, bearing in mind that each unit comes with a built-in overriding relay, which when triggered will automatically set the output level to maximum. The AP Series serves as a patch-in panel for a local 100V line source to the loudspeakers connected to it. The units also come with overriding relay for emergency overriding of the local source.