Werma signaltechnik combination led flash beacon with continuous tone horn werma signaltechnik 42532075 the werma signaltechnik 42512075 is a combination led flash beacon with a continuous tone horn this 24v acdc yellow beacon has a sound output of 98db all neatly assembled within a diameter of only 83mmthe signals can be triggered variably ie both the light and the audible element can be activated in whatever sequence necessary or simultaneously for two stage signalling the body