wireless doorbell 1.CE&ROHS 2.Digital Code,300 meters. 3.Led light in Receiver,Nameplate in Sender. 4.Battery operated wireless doorbell1.CE&ROHS2.Digital Code,300 meters. 3.Led light in Receiver,Nameplate in Sender. 4.Battery operatedDescription DESCRIPTION52 dulcet polyphonic melodies300m operating range(on open air)4 grades volume regulationWaterproof functionRemote Control Output<10mwRemote ...