Werma signaltechnik combination red led flashbuzzer 92db werma signaltechnik 42311075 the werma signaltechnik 42311075 is a combination red led flashbuzzer that sets new standards for optical acoustic signallingthe combination unites a very bright light signal with the powerful sound of a buzzer the bracket mounted beacon radiates light both forwards and to the sides thus ensuring optimal all round signal visibility the continuous pulse tone has a sound output level of 92db can be