Werma signaltechnik combination yellow led double flash multi tone siren 114db werma signaltechnik 44430075 the werma signaltechnik 44430075 is a combination led double flash multi tone siren the siren will flash red at an interval of once or twice per second while the loud adjustable tone can reach up to 114db making this ideal for large areasthe sounder has 32 different alarm tone combinations for a wide range of applications the flash and acoustic signal can be controlled separ