DW's horn speakers are designed to support Power over Ethernet (PoE) for a simplified installation process. With PoE, the speaker can be powered and transmit data through a single cable, making it easy to integrate with your existing surveillance, Voice over IP (VoIP) telephony (via SIP), and event management via DW Spectrum IPVMS. As a standalone product, the speaker can be placed anywhere you need it. The horn speaker is a cost-effective solution for delivering non-emergency messages to public areas, supporting and helping streamline your operations and offering public addresses, guidelines and announcements.