The Model 350 Vibratone Horns produce a very loud horn tone by the electro-mechanical vibration of a diaphragm. Capable of reproducing coded blasts or sustained tones through the use of a number of control devices from a push button to a PLC. Federal Signal's Vibratone horn is excellent for general alarm, start and dismissal, coded paging, and process control signaling in areas of high ambient noise levels. The Vibratone Model 350 is available in AC voltages 24VAC and 120VAC. The Model 350 produces 100dBa @ 10' Vibratone mounting options provide for surface, flush or semi-flush mounting on walls, panels, in cabinets, on 4-inch square outlet boxes, or in concrete and deep wall constructions. Vibratone horns are UL and cUL Listed, CSA Certified and FM Approved. Each Vibratone horn is enclosed in a zinc die-cast housing and sealed with grey powder-coat paint. The Model 350 features a stainless steel diaphragm. The rugged construction of the Vibratone horns resists vandalism and the effects of harsh industrial environments. Compact size, loud output and heavy-duty construction make the VibraTone horns ideal for industrial and institutional signaling applications. 5 Year Limited Warranty.