Ediors&reg; 12 Volt 60W 300 Decibels Electronic Wired Alarm Siren with 5 Tone & PA Microphone System for Motorcycle Car Truck 5 Siren sounds: Hooter/Ambulance/Traffic/police/Fire alarm Microphone for PA system Provides very loud sound about 300 decibels at full volume Support switch & volumn adjustment, 12V 60W Press once to operate the corresponding sound & press again to turn the sound off Press the red button below then you can speak via the microphone