40mm Buzzers

841 40mm buzzers products are offered for sale by suppliers on Alibaba.com, of which alarms, buzzers, and sirens accounts for 9%, indicator lights accounts for 1%. A wide variety of 40mm buzzers options are available to you, such as plastic, abs and aluminum.You can also choose from red, white and green 40mm buzzers,As well as from dc, ac 40mm buzzers,And whether 40mm buzzers is magnetic, {2}, or {3}.