Werma signaltechnik base or wall mount multi tone siren 105db werma signaltechnik 15300055 the werma signaltechnik 15300055 is a base or wall mount multi tone siren that has an adjustable sound output of up to 105db making it ideal for large or small areasthe siren is able to play customer specific audio files signal tones music and spoken text the product can be mounted using the basebracket to walls or machines werma signaltechnik 15300055 siren bwm 8 tone 85mm 24vdc ip66