Kepo minature buzzers 23 03khz27 03khz31 05khz kepo kpx g1203b 6400 the kepo minature buzzer 31 05khz is an electronic buzzer that offers a high but rich sound able to generate a continuous pulse tone when energised by a 3vdc rated voltage outputs of up to 85db3vdc10cm can be achieved suitable for use in professional commercial and industrial applications kepo kpx g1203b 6400 miniature buzzer 31 05 khz