There were over 5 million pcs. Performance record built by cusomers in security field.
These are waterproof piezo resonance speakers.
Key Specifications
• Operating voltage : 200 Vp-p (Max)
• Resonant frequency : 3.3 ± 0.5KHz
• Siren output : 115 ± 5 dB ( at 3.3KHz )
• Operating frequency :
1.5KHz - 3.5KHz ± 30%
• Color : Black, Red + Ivory or others
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