Piezo Buzzer Element with Aluminum Cover

From the shop's description

Piezo Buzzer Element with Aluminum Cover These piezo buzzer elements combine a ceramic piezoelectric disc with a rigid aluminum cover to create a low‑profile acoustic transducer optimized for panel mounting and embedded designs. The aluminum shell protects the ceramic plate while helping to form a small resonance chamber that improves sound output and durability in compact devices. Features: Durable aluminum cover for enhanced protection and acoustic efficiency. Pre-wired with red (positive) and black (ground) leads for simple connection. Low power consumption, ideal for battery-powered devices. High reliability with no mechanical contacts, ensuring noiseless operation. Specifications: Parameter Value Diameter (12mm Variant) 12mm Resonant Frequency (12mm) 9.0 ± 1.0 kHz Resonant Impedance (12mm) 1000 Ω max Capacitance (12mm) 8.0 nF ± 30% Diameter (15mm Variant) 15mm Resonant Frequency (15mm) 6.0 ± 1.0 kHz Resonant Impedance (15mm) 800 Ω max Capacitance (15mm) 10.0 nF ± 30% Diameter (20mm Variant) 20mm Resonant Frequency (20mm) 6.3 ± 0.6 kHz Resonant Impedance (20mm) 1000 Ω max Capacitance (20mm) 10.0 nF ± 30% Operating Voltage 3-24 VDC Maximum Voltage 30 Vp-p Operating Temperature -20°C to +70°C Material Ceramic piezo element with aluminum cover Applications: Audible alerts in security alarms and smoke detectors. Feedback tones in consumer electronics like microwaves and toys. Vibration or knock detection in smart home devices. Sound generation in medical equipment and timers. Integration into DIY projects and Arduino-based systems. Use in automotive buzzers for warnings. Package Include: 1x Piezo Buzzer Element with Aluminum Cover Documents: Data sheet Certification