5 Pack Sewable Surface Mount Buzzer for 3V Circuit, 24.8mm x 11mm x 6.1mmThis Sewable Surface Mount Buzzer is ideal for adding sound or an alarm to any e textiles project. This buzzer has a built in driver circuit that emits a single tone when the buzzer is connected to a 3V power supply. It has two connections to which the conductive thread can be connected. These are clearly marked with '+' and ' ' to indicate which is the positive and which is the negative connection. The PCBs are double sided making the conductive