Rated voltage: 230VAC Or 120VAC
Operating Voltage: 160-260 Or 70-150
Rated Current(MAX): 30mA
Min Sound Output at 10 cm: 80dB
Coil Resistance: 7000OΩ Or 4200OΩ
Tab Material: Brass
Operating Temperature: -30℃ - +85℃
Storage Temperature: -40℃ - +85℃
Housing Material: PBT
In common parlance a Buzzer is a signaling device that is not a loudspeaker. It can be mechanical, electromechanical, or electronic (a piezo transducer).
The application of piezo buzzer in household goods, medical devices and even very loud sirens. When a lower frequency is required an electromagnetic buzzer can fill the need. These are very common in automotive chimes and higher end clinical diagnostic devices.