Soundoff Signal ETSA481RSP Nergy 400 Series Remote Siren W/ Button Control, 10-16V - 100 Watt Single-ToneSoundoff Signal ETSA481RSP Features Officers value the sound intensity of the dual tone feature fooling perpetrators into believing multiple police vehicles are in pursuit 200 watt sirens feature dual tone capability to deliver tow siren tones at once to provide officers with extreme traffic moving capability Features an eight second buzzer alert to notify users that the level or auxiliary buttons are activated Horn ring scroll provides ability to