PUI Audio 86 dBA Through Hole External Piezo Buzzer Transducer 4 mm 2 V Min 9 mm 9mm 4V Max

This piezo buzzer transducer converts an external drive signal into an audible alert for control and signalling tasks in industrial electronics. It is a Compact through‑hole device intended for PCB mounting and low‑voltage systems, providing a clear acoustic output suitable for panels and equipment where space is limited and low‑power operation is required.

• Operates from 2 to 4V for energy‑efficient signalling
• Produces 86 dBA sound pressure level for audible alerts
• Frequency range 2230 to 3230 Hz for adaptable tone selection
• Through‑hole mount for secure PCB retention
• Rated to 70°C for elevated ambient environments

• Suitable for machine control panels requiring audible warnings
• Ideal for embedded alarm circuits in automation systems
• Used with low‑voltage power supplies in instrumentation
• Can be used for fault indication in electrical enclosures

It needs an external drive source rather than an internal oscillator, allowing precise control over Pulse timing and waveform.

Through‑hole mounting provides stable mechanical fixation and consistent electrical connection under vibration compared with non‑fixed alternatives.

The component can be used in installations with ambient temperatures up to 70°C without exceeding its maximum operating temperature.

The device emits within a defined band from 2230 Hz up to 3230 Hz, enabling selection of tones that distinguish alerts in noisy environments.