Full stock Special promotional doorbell door chimes wireless

Full stock Special promotional doorbell door chimes wireless 

Put the machine on the door inside.
 Put the small magnet on the doorcase.
 Put the arrow of magnet in the front of red arrow in the machine.
 Remain space between the magnet and machine about 1.5mm.
 After you testing the machine teak sticker out then stick the machine.
 For more steady using the nail where batteries emplace.

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