41.P35P120A-LF Piezo Buzzer by IMO. Package: light grey coloured plastic cylinder 23.4nn Dia. x 9.5mm deep. with removable protective "washing label" leads: 2 off. 0.75mm Dia x 10mm. Frequency: 3.4 KHz +/- 500 Hz (90dB/10cm) Ratings: range 3 ~ 20Vdc operating : 12Vdc @8mA