Werma signaltechnik led double flashmulti tone sounder combination yellow werma signaltechnik 44431075 the werma signaltechnik 44431075 is an led double flashmulti tone sounder combination sirenbeacon the various mounting possibilities for this led evs sirenbeacon are numerous it can be mounted on a wall floor or even a ceiling enabling optimal visibility of the led double flash and an optimal sound propagation optical and acoustic signal can be controlled separatelythis multi