Hi! My name's Thunderbolt 1003! But you can call me 1003. I sound off for tornadoes, fires, disasters, and tests! I have 3 tones. Alert, Fire, and Attack! And I have 2 solenoids that are attached to the throat of my horn, they're used for the hi lo/Fire signal! And I'm friends with the Thunderbolt 1000T tornado siren! He doesn't have solenoids because he doesn't have a hi lo/Fire signal. So he uses 2 signals that are alert and attack! I can also rotate! Teehee!!