Kepo piezo transducers 28 42 05khz range kepo kpi g2329 6261 the kepo piezo transducer 29 05khz 23mm is able to generate a continuous pulse tone when energised by a 12vdc rated voltage outputs of up to 85db12vdc30cm can be achieved suitable for use in professional commercial and industrial applications kepo kpi g2329 6261 piezo transducer 29 05 khz 23mm