Piezoelectric Ceramic Transducer 22×7.0mm 

Short Description: Φ22*7.0mm, 3Vp-p, 80dB, 4000hz, piezo transducer, made by automachine production line Electrical Specifications:     Type   Unit EPT-22B4003P     Rated Voltage(Square wave) Vp-p 3     Operating Voltage  Vp-p 1~30 *  Rated Current (Max)  mA 1 *  Min sound output at 10cm  dB 80 *  Resonant Frequency  Hz 4000±500Hz   Capacitance at 120Hz     pF 15000±30%    Operating Temperature ℃ -20 ~ +70…