Kepo piezo transducers 10 45 05khz range kepo kpt3 g4010g 6247 the kepo piezo transducer 34 05khz 40mm is able to generate a continuous tone when energised by a 12vdc rated voltage outputs of up to 90db9vdc30cm can be achieved suitable for use in professional commercial and industrial applications kepo kpt3 g4010g 6247 piezo transducer 34 05 khz 40mm