AT-PA-IPHS30W The Outdoor IP POE Horn Speaker AT-PA-IPHS30W is the latest in IP technology. This Power over Ethernet (Compatible with IEEE 82.3at) POE horn speaker featured of network-controlled speaker volume, scheduled program broadcast, priority based multicast streaming, group definition. The POE outdoor IP horn speaker is compatible with universal POE switch, works with existing POE LAN/WAN & internet network and fibre – optical cable, no need dedicated network to be built-up. So it is very useful for office, hotel, schoo, bank, factory & shopping mall where POE network is already there.