fanvil FH-S01 is a SIP ceiling speaker featuring paging, multicasting, broadcasting and talkback functionalities. It supports up to 10 multicast zones with prioritization. It delivers high-intelligibility performance with G.722&Opus codecs. Adopted standard SIP 2.0(RFC3261) and related RFC protocols, it has strong compatibility and scalability. Product Highlights All in one functionality with audio codec, digital amplifier and speaker High-intelligibility performance with G.722&Opus codecs Support up to 10 multicast zones with prioritization Audio power up to 20W (DC power supply) with built-in class D amplifier Support talkback with built-in microphone Customize the WAV file for emergency notification and alarm Linkage with security alarming devices Support remote configuration via web page and auto-provisioning 10/100 Mbps Ethernet, Integrated PoE(IEEE 802.3af, class 0)