[specifications] [/specifications]AXIS C1511 Network Pendant Speaker is an all-in-one speaker system that makes voice announcements smart and easy. It connects to standard network using one cable for both power (PoE and connectivity. AXIS C1511 is ideal for high ceiling installations of any height, thanks to easy adjustable wire length [wire not included]. It offers easy integration with your video management software (VMS, VoIP telephony, analytics, and more. Including a preconfigured digital signal processer (DSP it produces clear voice every time. It also features a built-in microphone enabling remote health testing and 2-way audio talk-back. Furthermore, the embedded audio management software supports user, content, zone, and scheduling management. Axis pendant speakers comes in two sizes, whereas AXIS C1511 is the smaller model.