Buzzer elements/ speakers & Alarms
Product Description
| Specification | Types | |
| 20T | 27T | |
| Resonant frequency(KHz) | 4.0 ± 0.5 | 3.9 ± 0.5 |
| Equivalent Resistance（Ω） | ≤500 | ≤500 |
| Free Capacitance(PF) | Cm: 20000 ± 30% at1.0KHz | Cm: 25000 ± 30% at1.0KHz |
| Metal Plate Dia.D1(mm) | 20 ± 0.10 | 27 ± 0.10 |
| Piezoelectric Plate Dia.D2(mm) | 15 ± 0.30 | 20 ± 0.30 |
| Metal plate Thickness,T1(mm) | 0.15 ± 0.02 | 0.20 ± 0.02 |
| General Thickness T(mm) | 0.27 ± 0.05 | 0.43 ± 0.05 |
| Coaxial degree(mm) | 0.4 | 0.5 |
| Metal Material | Brass | Brass |
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