Enhance your sound detection and vibration sensing projects with these high-quality Piezo Discs, crafted from durable brass and ceramic materials for exceptional temperature resistance and long-lasting performance. Designed with precision, each piezo pickup plate features a slim 0.4mm thickness, making it lightweight, compact, and easy to integrate into various homemade instruments and electronic devices. Key Features: · Premium Brass and Ceramic Construction: Ensures stability, durability, and resistance to temperature fluctuations, providing consistent and reliable performance over time. · Thin and Lightweight Design: With a thickness of only 0.4mm, these piezo discs are small, thin, and easy to install without adding bulk to your projects. · Superior Performance: Operating at a resonant frequency of 4.6 ± 0.5 KHz and a maximum resonant impedance of 300 ohms, these pickups deliver high sensitivity with low power consumption for precise sound and vibration detection. · Pre-Wired and Easy to Use: Equipped with pre-attached cords, these piezo pickups can be quickly installed in cigar box guitars, foot stompers, and other DIY instruments for effective sound pickup and vibration sensing. · Versatile Application: Ideal for beginners and professionals alike, these piezo discs are perfect for use as touch sensors, electronic drum triggers, buzzers, and for creating custom contact microphones. They are also compatible with devices like watches, cameras, phones, electronic toys, and computers. Specifications: · Diameter Options: 20mm with 250mm cord length / 27mm with 330mm cord length / 35mm with 250mm cord length (optional) · Material: Brass and Ceramic · Thickness: 0.4mm · Resonant Frequency: 4.6 ± 0.5 KHz · Resonant Impedance: 300Ω max · Package Weight: 50g / 70g / 70g (depending on size) · Package Size: 15 x 10 x 5 cm Package Includes: · 15 x Piezo Discs (various sizes, as specified) These Piezo Discs offer a reliable and sensitive solution for a broad range of sound and vibration detection applications, combining excellent build quality with ease of installation and versatility. Perfect for electronic music projects, DIY instruments, and sensor-based devices, they provide a dependable component for your creative and technical needs.