High Performance Resonant frequency 3.0~5.0+/- 0.5 KHz, resonant impedance 300 ohms max, low power consumption and high sensitivity. Piezo pickup plate diameter 15mm/ 0.59 inches, thickness 0.2mm/ 0.007 inches; small, thin and lightweight, package: 5 Pcs x buzzer film. Made of brass and ceramic, temperature resistant, stable, durable and long service life. Easy To Use: These pre-wired piezo pickups are easy to install, foot stompers and other home-made instruments for sound and vibration detection. Wide Usage: Perfect for beginner to use as touch-sensors, electronic drum triggers, buzzers, make your own contact mics, also used for watches, cameras, phones, electronic , computer, etc. Specifications: Drive Type: Piezo Discs Resonant frequency(kHz): 3.0~5.0+/- 0.5 KHz Resonant impedance (ohms): 300 max Diameter: 15mm/ 0.59 inches Thickness: 0.2mm/ 0.007 inches Cable Length: 60mm/ 2.36 inches Material: Brass
