Kepo piezo transducers 10 45 05khz range kepo kpt3 g3039 6246 the kepo piezo transducer 39 05khz 30mm is able to generate a continuous tone when energised by a 12vdc rated voltage outputs of up to 106db12vdc5cm can be achieved suitable for use in professional commercial and industrial applications kepo kpt3 g3039 6246 piezo transducer 39 05 khz 30mm