ELK-SS30 ELK Exterior Dual Tone Self-Contained Siren 30 Watt

ELK-SS30 ELK Exterior Dual Tone Self-Contained Siren 30 WattExterior Siren Dual Tone (Yelp and Steady) Self-Contained Siren.Features of ELK-SS30 ELK Exterior Dual Tone Self-Contained Siren 30 Watt Ext...