Cheap And Discounts 10PCS 9042 integrated passive AC buzzers 9 * 4.2mm with a foot pitch of 4mm 3V 3.3V buzzer 16 ohms Wholesale. Buy Directly From Merchant Shenzhen Yishengxin Electronics Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.