The Q-SC-P620 is a highly intelligible and compact horn speaker with a built-in 20W digital power amplifier, that provides public address announcement and remote paging via network video surveillance applications. This powered horn speaker can operate at extreme temperature. It comes with powder-coated finish and stainless steel screws to ensure its weatherproof capability. Ideal choice for both indoor and outdoor application at restricted facilities, train stations, airports and many more.