Werma signaltechnik wall mount multi tone sounder 32 tones 110db werma signaltechnik 19000067 the werma signaltechnik 19000067 is a wall mount multi tone sounder that is able to produce 32 different tones and frequencies for a diverse range of applications in addition to continuous and alternating tones in a range of frequencies the multi tone sounder can also provide a large selection of defined international standard tones the sound output can be adjusted in accordance with the amb