--- product_id: 11217406 title: "15 Pieces - 27mm Piezo Disc Elements with Feedback Electrode for Buzzer / Alarm Circuit / Hartley Oscillator" brand: "audiowell" price: "€ 22.24" currency: EUR in_stock: true url: https://www.desertcart.fr/products/11217406-15-pieces-27mm-piezo-disc-elements-with-feedback-electrode-buzzer store_origin: FR region: France --- # Capacitance: 20,000pF Resonant Frequency: 4.6KHz 3 Lead Design 15 Pieces - 27mm Piezo Disc Elements with Feedback Electrode for Buzzer / Alarm Circuit / Hartley Oscillator **Brand:** audiowell **Price:** € 22.24 **Availability:** ✅ In Stock ## Summary > 🔔 Elevate Your Alerts with Precision Sound! ## Quick Answers - **What is this?** 15 Pieces - 27mm Piezo Disc Elements with Feedback Electrode for Buzzer / Alarm Circuit / Hartley Oscillator by audiowell - **How much does it cost?** € 22.24 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/11217406-15-pieces-27mm-piezo-disc-elements-with-feedback-electrode-buzzer) ## Best For - audiowell enthusiasts ## Why This Product - Trusted audiowell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **⚡ Power Packed:** Experience high capacitance at 20,000pF, ensuring robust signal handling. - • **🌟 Feedback Ready:** Designed with a feedback electrode for enhanced circuit functionality. - • **🎶 Precision Tuning:** Enjoy a resonant frequency of 4.6KHz +/- 0.5KHz for optimal sound performance. - • **🔧 Easy Integration:** Use as a standard piezo disc by simply eliminating the blue connection. - • **🔊 Unleash the Sound:** Crafted with 3 Lead Piezo discs for versatile buzzer and alarm applications. ## Overview This set of 15 pieces of 27mm Piezo Disc Elements is engineered for creating buzzers and alarms, featuring a unique 3 lead design with a feedback electrode. With a resonant frequency of 4.6KHz and a capacitance of 20,000pF, these discs are perfect for a variety of electronic applications, ensuring reliable and powerful sound output. ## Description 15 Pieces - 27mm Piezo Disc Elements with Feedback Electrode for Buzzer / Alarm Circuit / Hartley Oscillator ## Features - 3 Lead Piezo discs are used to construct Buzzers/Alarms - The "3rd Lead" is on the Feedback Electrode - Can be used as a standard piezo disc (eliminate blue connection) - Resonant Frequency: 4.6KHz +/- 0.5KHz - Capacitance @ 1KHz: 20,000pF ## Product Details - **Color:** Brass - **Material:** Brass, Ceramic, Copper Wire - **Manufacturer:** Audiowell ## Images ![15 Pieces - 27mm Piezo Disc Elements with Feedback Electrode for Buzzer / Alarm Circuit / Hartley Oscillator - Image 1](https://m.media-amazon.com/images/I/91FPfHYkOaL.jpg) ## Frequently Bought Together - 15 Pieces - 27mm Piezo Disc Elements with Feedback Electrode for Buzzer / Alarm Circuit / Hartley Oscillator - ALAMSCN 3.3V 5V MB102 Solderless Breadboard Power Supply Module with 9V Battery Clip Power Cable 2.1x 5.5mm Male DC Jack Plug for Arduino (Pack of 3) - Twidec/3Pcs Heavy Duty Rocker Toggle Switch 16A 250V AC DPST 2 Position 4 Pin ON/Off Switch with Metal Bat Waterproof Boot Cap Cover Ten-1221-B201 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/11217406-15-pieces-27mm-piezo-disc-elements-with-feedback-electrode-buzzer](https://www.desertcart.fr/products/11217406-15-pieces-27mm-piezo-disc-elements-with-feedback-electrode-buzzer) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-04-23*