Rated voltage: 12V
 Operating Voltage: 1-17
 Rated Current(MAX): 30mA
 Min Sound Output at 10 cm: 98dB
 Resonant Frequency: 4000±500
 Tone Nature: single
 Lead pin material: Red copper
 Operating Temperature: -30℃ - +85℃
 Storage Temperature: -40℃ - +85℃
 Housing Material: NORYL
 Weight: 3g
   
  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.