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The piezo discs transducer is made of brass and ceramic, it is sturdy and can guarantee longterm use, low power consumption and high sensitivity Resonant frequencies by size 20mm 6.00.7 KHz, 27mm 3.50.5 KHz, 35mm 1.80.3 KHz, 41mm 3.05.00.5 KHz. Max resonant impedance 300 ohms, with low power consumption and high sensitivity for reliable results These piezo elements are prewired for easy installation and are ideal for acoustic instrument pickups, foot stompers, contact microphones and other homemade instruments for sound vibration detection The piezo transducer are perfect for beginner to use as touchsensors on DIY projects, it is fun to turn acoustic instruments into electric sound, great for installing on cigar box guitars, drum triggers etc 32pcs piezo discs in 4 sizes 20mm, 27mm, 35mm, 41mm 8 pieces each. Prewired with 60mm leads, lightweight and ready for quick setup MORE DETAILS asin B0FN7FTJ5Y bestsellersrank 38,517 in Industrial Scientific See Top 100 in Industrial Scientific 4 in Piezo Transducers colorname Gold customerreviews 4.5 4.5 out of 5 stars 23 4.5 out of 5 stars datefirstavailable August 21, 2025 itemmodelnumber piezo pickup itemweight 2.08 ounces materialtype Brass and ceramic packagedimensions 3.58 x 3.5 x 0.75 inches size 32Pcs 4 Size 20mm, 27mm, 35mm, 41mm
