3v Magnetic Door Buzzer

40 3v magnetic door buzzer products are offered for sale by suppliers on Alibaba.com, of which alarms, buzzers, and sirens accounts for 65%, alarm systems accounts for 10%, and acoustic components old accounts for 7%. A wide variety of 3v magnetic door buzzer options are available to you, You can also choose from black, 3v magnetic door buzzer,as well as from dc, ac, and peak-peak signal 3v magnetic door buzzer,And whether 3v magnetic door buzzer is magnetic, {2}, or {3}.