HELVIA EVOCA 30H is a compact, lightweight and waterproof horn speaker, designed to provide high efficiency and high sound intelligibility with low distortion. The built-in line transformer allows the horn to be connected to 70V and 100V constant voltage or low-impedance lines, and select the power through the rotary dial on the rear cover. The horn can be easily mounted to any wall or ceiling by using the stainless-steel mounting bracket. Thanks to the weatherproof treated plastic housing, the EVOCA 30H has an IP66 Ingress Protection standard, which make it suitable for outdoor installations.