The CUI Devices part CPE-220 is a compact and versatile piezo audio indicator buzzer. With a diameter of 24 mm, it can fit into various applications. It operates within a voltage range of 3~20 V and produces a loud sound output of 76 dB at a frequency of 2.7 kHz. The buzzer features a panel mount design with convenient wire leads for easy installation. Additionally, it includes a driving circuit for seamless integration into your circuitry. This reliable and efficient buzzer is perfect for alerting and notifying users in a wide range of industrial, automotive, and consumer electronics applications.