Werma-Signaltechnik-Continuous-Tone-Electronic-Buzzer-80d B-Werma-Signaltechnik-109-000-75-P-The-Werma-Signaltechnik-109-000-75-is-a-Continuous-Tone-Electronic-Buzzer-with-a-plug-in-screwable-connection-It-is-ideal-for-22-5mm-diameter-installation-in-control-switchgear-panels-The-24V-AC-DCappliance-is-produced-according-to-EN-60947-VDE-0660-T100-P-Werma-Signaltechnik-109-000-75-Continuous-Tone-Electronic-Buzzer-24VDC-80d B