The RadioShack Pulsing or Constant Tone Piezo Buzzer is a versatile electronic component designed for a wide range of applications. With a resonant frequency of 2.8kHz, this piezoelectric buzzer can produce continuous or pulsed sound patterns at a sound level of 86dB. Its compact round shape and low power consumption of 8mA make it suitable for use in various electrical equipment and supplies, especially in scenarios where a clear and reliable alert or notification is required. Compatible with DC voltages ranging from 4-28VDC, this RadioShack piezo buzzer is an essential addition to any electronic component collection.