The CyberData Multicast Ceiling Speaker is an economical Power-over-Ethernet (PoE 802.3af) and Voice-over-IP (VoIP) public address product. It easily connects to your PoE network with a single Ethernet cable connection. The speaker is capable of playing messages from any multicast source like the CyberData SIP Paging Server with Bell Scheduler (PN#011146). The device’s small footprint allows the speaker to be discreetly mounted in your ceilings. Features - Receives multicast messages - Supports audio prioritization for 10 multicast paging groups - Can receive pages directly from phones as well as other devices that can send standard multicast - Supports delayed pages with buffered multicast - Network-adjustable speaker volume - High efficiency speaker driver - Small footprint - TLS security for auto provisioning and web-based configuration - 802.11q VLAN tagging - Configurable event generation for device health and status monitoring - User upgrade-able firmware via web interface or auto provisioning