The Wireless Wall Sounder & Wall Sounder VAD combine the Wireless Wall Sounder Module with the Conventional Wall Sounder and Conventional Wall Sounder VAD (each sold separately). The Wall Sounder is a EN 54-3 (Type B) compliant acoustic device,equipped with 3 levels of volume adjustment and 32 recognised tones which can be set locally at the sounder. The Wireless Wall Sounder VAD is a EN 54-3 (Type B) and EN 54-23 compliant visual/alarm device, equipped with 3 levels of volume adjustment, high output LED beacon, and 32 recognised tones which can be set locally at the sounder. The wireless wall sounders, once properly connected to a wireless system on a compatible loop, are fully controlled by the panel and benefits from an extensive range of intelligent control, test and monitoring functionality. Adaptive radio signal processing algorithms ensure the highest levels of life safety and reliability.