פעמון דלת מכני

333 mechanical door bell products are offered for sale by suppliers on Alibaba.com, of which doorbells accounts for 19%, door phones accounts for 9%. A wide variety of mechanical door bell options are available to you, such as wireless doorbel, video doorbell and digital.You can also choose from apartment, office and home office mechanical door bell,as well as from return and replacement, free spare parts, and onsite training mechanical door bell, and whether mechanical door bell is modern, traditional, or industrial.