... wireless door bell,digital doorbell,door chime,factory low price,flashing while music sound,use battery,30-50M remote range,OEM ... wireless door bell,digital doorbell,door chime,factory low price,flashing while music sound,use battery,30-50M remote range,OEMSpecifications ... wide range of Audio,Electronic and Digital devices in Shenzhen,China. All our products emphasize on origiality and creativity,while ...