Kepo piezo transducers 28 42 05khz range kepo kpi g2412 6269 the kepo piezo transducer 32 05khz 233mm is able to generate a continuous tone when energised by a 12vdc rated voltage outputs of up to 75db12vdc30cm can be achieved suitable for use in professional commercial and industrial applications kepo kpi g2412 6269 piezo transducer 32 05 khz 233mm