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PUI Audio, Inc.

- PUI Audio, Inc. is a leading developer, manufacturer and supplier of quality audio devices and components including buzzers, alerts and transducers. Corporate offices, product development, engineering, sales and customer service are located in Dayton, Ohio.

Our growth and product innovation are the results of listening to our customers. With an extensive network of sales representatives, agents and distributors, we provide products and services throughout the world.

Whether your needs are for an off-the-shelf product or a custom design, Projects Unlimited has your sound solution.

Sound Solutions

PUI Audio Sound Solutions

PUI Audio has a large portfolio of audio components including audio sound eXciters and a variety of other products that create a total sound solution. Learn More

Audio Kits for Design Solutions

Image of PUI Audio's Audio Kits for Design Solutions

PUI Audio offers kits that cover any audio application. Designing audio components can be difficult due to the different sounds, frequencies, and sensitivities. Learn More

Featured Products

Image of PUI Audio AS01508/AS01808 Series Microspeakers

AS01508/AS01808 Series Micro Speakers

PUI Audio’s slim-line micro speakers are purpose-built for space-limited, modern electronics, such as smartphones, tablets, and laptops, as well as wearable technology and IoT devices, such as Wi-Fi-enabled thermostats. Learn More

Image of PUI Audio SMT-0440 Series Transducers

SMT-0440 Series 4 x 4 x 2 mm Surface Mount Transducers

PUI Audio, Inc. pushes the envelope of audio transducer design by shaving the size of their already small SMT-0540 transducers down 20% with their new SMT-0440 series surface-mount transducers, adding sound to even smaller devices than ever before. Learn More

Newest Products View All (26)

Image of PUI Audio's Mobile Series Speakers and Receivers

Mobile Series Speakers and Receivers

PUI Audio's mobile series of speakers and receivers designed for high-fidelity audio reproduction with the lowest profile possible.

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Image of PUI Audio's HD Series Microphones

HD Series Microphones

PUI Audio's HD series microphones feature GSM buzz-blocking capacitors and true 20 Hz to 20 kHz performance.

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Image of PUI Audio's N50 Mini Speakers

N50 Mini Speakers

PUI Audio is pleased to announce a lineup of high-fidelity speakers in a very small size.

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Image of PUI Audio's Wake-On Sound Piezoelectric MEMS Microphone

Wake-On Sound Piezoelectric MEMS Microphone

PUI Audio, with Vesper’s exclusive technology, presents the world’s first ZeroPower Listening™ piezoelectric MEMS microphone designed for ultra-low power always listening solutions; delivering voice activation to battery-powered devices.

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Image of PUI Audio's Sound eXciters Speakers

Sound eXciters Speakers

PUI Audio’s large high-output sound eXciters are designed for applications that demand loud sound with high fidelity, while remaining completely hidden.

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Image of PUI Audio's Piezoelectric MEMS Microphone

Piezoelectric MEMS Microphone

PUI Audio's piezoelectric MEMS microphone is suitable for voice user interface, IoT products, wearables, smartphones, and smart home devices.

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Product Training Modules View All (5)

Image of PUI Audio's SMT-0440 Series 4 mm x 4 mm x 2 mm Surface-Mount Transducers

SMT-0440 Series Surface Mount Transducers

Duration: 5 minutes

PUI's electro-mechanical surface mount transducers, the SMT-0440 series, are ideal for reducing the size of a hand-held device without sacrificing audible output, battery life, or functionality.

Enclosed speakers

Enclosed Speaker Components

Duration: 5 minutes

Highlighting the components' operation and the benefits of the new speaker offerings from PUI Audio.


Side-Firing Washable Surface Mount Transducers

Duration: 5 minutes

Even when standard solder pastes are used, component can be washed in high pressure without damaging the audio device.


SMT-0540 Series Surface Mount Transducers

Duration: 5 minutes

This transducer offers sound output comparable to three times the size of the component, making it a ideal for the shrinking sizes of handheld devices.

Featured Videos View All (8)

PUI Audio Exciter - Another Geek Moment

Pat an Applications Engineering Technician from Digi-Key describes the eXciter from PUI Audio for us and an example of how it sounds on different surfaces.

PUI and Pimoroni New Product Discoveries with Randall Restle Episode 8

An exciter from PUI and the micro:bit from Pimoroni are discussed on this session of Digi-Key New Product Discoveries with Randall Restle.

PUI Audio Ultrasonic Receivers, Transmitters, and Benders | Digi-Key Daily

PUI Audio's ultrasonic receivers, transmitters, and benders are designed for high frequency sensing in distance measuring, fluid flow, and fluid-level systems.

PUI Piezoelectric Ultrasonic Sensors – Another Geek Moment

A look at PUI Audio’s piezoelectric ultrasonic sensors and how piezoelectric ultrasonic sensors are integrated into a circuit.

Manufacturer Web site