Package includes: 10 pieces of 35 mm piezo buzzer discs for sensor and speaker applications Key benefits Ready to use set of 10 identical 35 mm piezo discs, ideal for batch projects or multiple prototypes Dual function as vibration sensors and sound emitters, making them useful for both detection and audio output tasks Compact size and thin form factor enable integration into small enclosures and portable projects Simple to integrate with common hobby electronics and microcontroller platforms for rapid prototyping What they are and how they work Piezoelectric ceramic discs that convert mechanical vibrations or pressure into electrical signals and can also produce sound when driven electrically Suitable for audible frequency ranges commonly used in speech and music applications, allowing use as contact microphones, buzzers, or small speakers Key attributes Size: 35 mm diameter, practical for many DIY and sensor applications Quantity: 10 pieces per package for multiple uses or replacements Material: piezoelectric disc construction for reliable transduction of vibration to electrical signal and vice versa Function: usable as a buzzer element, pressure sensor element, contact microphone, or small speaker component Compatibility and integration Works with standard buzzer circuits and sensor modules and can be interfaced with common microcontrollers and audio driver circuits Mounts easily to flat surfaces or inside enclosures; can be glued or held with a small clip or bracket depending on enclosure design Practical use scenarios DIY alarm or notification system: use a disc as the soundproducing element in homemade buzzers and alert devices Contact microphone for speech and acoustic instruments: mount a disc to a resonant surface to capture vibrations for recording or live amplification Vibration or pressure sensing: use the disc as a simple knock or pressure sensor in hobby electronics projects to trigger events or measure impacts Basic handling and tips Secure mounting improves sensitivity for sensing applications and prevents unwanted rattling for audio use Keep connections stable and observe correct wiring in your circuit; use a suitable driver or preamplifier when using as an audio transducer Store discs flat and avoid excessive bending or impact to prevent damage This package supplies ten 35 mm piezo discs intended for DIY buzzer, sensor, and small speaker projects where compact size and dual sensor and audio functionality are required.