Details:Islamic Door BellPut the machine on thedoor inside.Put the samll 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

Details:Islamic Door BellPut the machine on thedoor inside.Put the samll 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.