Horn alarm *High-strength shell, waterproof, moisture-proof, corrosion-resistant, *Power:80W,100W,150W,200W *8ohm,4ohm,11ohm Horn alarm(Siren speaker,loudspeaker,alarm speaker)Features:1) High-strength shell, waterproof, moisture-proof, corrosion-resistant, fine qualityand reliable property2) Power: 150W3)Sound distortion: <5%4) Sound pressure: 120 - 130dB