DAOKAI 20pcs 27mm Piezo Disc Piezo Pickups, 3.93" Lead Piezo Amplifier Discs for Microphones, Drums, Triggers, Acoustic Pickups with Buzzer and Adhesi

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1. KEY FEATURES: - 🎖️【Function】: Piezo discs are essential parts for acoustic instrument pickups, contact microphones, and electronic drum triggers. - 🎖️【Material】: Made of brass and ceramic, it is heat resistant, stable, durable and has a long service life. - 🎖️【Easy to Use】: These prewired piezo pickups can be easily installed and used in cigar box guitars, foot stompers, and other home-made instruments to detect sound and vibration. - 🎖️【Performance】: Resonant frequency (kHz): 4.6+/- 0.5 KHz; Resonant impedance: 300Ω max; Capacitance: 28000PF +/- 30%.Low power consumption and high sensitivity. - 🎖️【Size】: Piezo pickup plate diameter 27mm/1.06in, thickness 0.4mm/0.01in, wire length 10cm/3.93in.

2. PRODUCT DESCRIPTION: Piezo disks are essential components in acoustic instrument pickups, contact microphones, and electronic drum triggers.Specifications Plate Material: Brass Type: Externally Driven Element Resonance Frequency (kHz): 4.6+/- 0.5 KHz Resonance Impedance: 300Ω max Capacitance: 28000PF +/- 30% Storage Temperature: -30 ℃~70 ℃ Outer Diameter: 27mm / 1.06'' Inner Diameter: 20mm / 0.79''Lead length: 10cm / 3.93inch Suitable for DIY projects, contact microphones, cigar box guitar pickups.Touch sensor, drum trigger, homemade speaker, buzzer, etc. Package contents: 20 pieces 27mm piezo pickups 20 pieces adhesive foam stickers

3. PRODUCT DIMENSIONS & WEIGHT: - Weight: 0.03 kg - Dimensions: 10.0 x 7.1 x 1.7 cm

4. SPECIFICATIONS: