E2S, Europe's leading manufacturer of sounders and beacons, has developed the GPH (General Purpose Horn), offering a high reliability long life electronic alternative to electromechanical warning devices. The sophisticated electronic circuitry and matching piezo driver combine to produce a very effective sound that mimics that of the traditional design and makes it ideal for use in areas with high ambient noise. In addition to the conventional pulsing output, the GPH generates two alternative warning tones, giving the installer or machine builder much greater flexibility in providing an effective warning signal. The GPH operates from 24VDC, 115 or 230VAC, is continuously rated and offers long operational life as there are no moving parts, diaphragms or contacts to wear out.