Hapihom 15pcs Piezo Pickup 20mm Piezo Amplifiers Discs With 10" Leads Contact Microphone Trigger Sound For Acoustic Guitar show

• Excellent Quality: Made of brass and ceramic, temperature resistant, stable, durable and long service life
• Size: Piezo pickup plate diameter 20mm, thickness 0.4mm; wire length 250mm(10inch), small, thin and lightweight
• High Performance: Resonant frequency 5.6+/-0.5 kHz, resonant impedance 300 ohms max, low power consumption and high sensitivity
• Easy To Use: These pre-wired piezo pickups are easy to install and use in box guitars, Foot treadmill and other home-made instruments for sound and vibration detection.
• Wide Usage: Perfect for beginner to use as touch-sensors,electronic drum triggers, make your own contact mics, also used for watches, cameras, phones, electronic toys, computer, etc.

Description: Name: Piezo Disc Transducer Base Material:Brass Size: center disc measures 20mm diameter, 0.4mm thick, Cord length 250mm Type:External drive type Resonant Frequency:5.6+/-0.5 kHz Resonant Impedance:300Ω max Static Capacitance: 50000PF +/- 30% Packing list: Pickup Disc x 15 Note: Due to manual measurement, please allow 1-3cm differences, thanks (all measurements are in cm, please note that 1cm=0.39 inches).