... ,use battery,30-50M remote range,OEM wireless door bell,digital doorbell,door chime,factory low price,flashing while music sound ... ,Asia,Ocean,etc Markets Request;Customerized Logo/Color acceptable. Package:Transmitter Size: 7.5*4.0*2.0CM Receiver Size: 9 ... professional manufacturer in a wide range of Audio,Electronic and Digital devices in Shenzhen,China. All our products emphasize on origiality ...