The Pyle In-Wall / Ceiling Commercial PA Intercom Speaker features built-in 100V transformer. Rugged and durable speaker housing style includes high-temperature aluminum voice coil and treated speaker cone for reliable sound delivery. The transformer ceiling speaker allows for tapping or constant voltage connection -- making the system suitable with distributed multi-zone speakers for PA public address and background music playback. Perfect for custom commercial speaker installations in areas including office business school and warehouse applications. Enjoy convenient flush mount ceiling speaker ability with the Pyle Commercial PA Intercom 100V Tap Line Speaker System.