|
Specification |
|
|
Type |
Passive (requires external driver)
or Active (self-oscillating) |
|
Operating Voltage |
3V–24V (varies by model; common:
5V, 12V) |
|
Rated Voltage |
Typically 12V (optimal
performance) |
|
Current Consumption |
≤30mA
(active) / Driver-dependent (passive) |
|
Frequency Range |
2kHz–4kHz (passive) / Fixed tone
(active, e.g., 2.7kHz) |
|
Sound Pressure |
≥85dB
(at 10cm, 12V) |
|
Resonant Frequency |
~3.5kHz (for passive models) |
|
Capacitance |
~15nF–20nF (passive) |
|
Operating Temp. |
-20°C to +70°C |
|
Material |
Piezo ceramic disc, plastic/metal
housing |
|
Diameter |
50mm (standard) |
|
Mounting |
Screw holes or adhesive backing |
|
Lifespan |
≥10,000
hours |
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