The PS1720P02 is a Buzzer transducer manufactured by TDK. It is externally driven and is a Piezo 3V 2kHz 70dB@3V. It is a 10 cm through hole PC Pins type transducer, with a base that is designed for direct mounting onto circuit boards for applications such as alerts and sirens for a variety of products. It has an operating voltage of 3 volts and a frequency of 2kHz, and it operates at 70dB @ 3V.