Wireless DoorBell 1 button 1 Receiver 110DB Sound Self Powered Waterproof Wireless DoorBell

Specifications： Type : Self-powered doorbell that requires no battery;  Plug : US/EU Plug;  Material : Plastic;  Color : White ( Optional );  Receiving Distance : 100 M  in open area;  Volume : 4 files (can be set to mute) 0-110DB;  Ringtones : 38 pcs;  Transmitter Size : 55 x 60 x 20 mm;  Receiver Size : 110 x 55 x 25 mm;    Package included:  1 * Transmitter;  1 * Receiver;