Wireless doorbells push button with 1 receiver,this doorbell kit is the perfect choice for home with two floors or two rooms.Door bells fit for home,office,villas,apartment,hospital,hotel,business,factories The wireless signals up to 1000 feets in open space and doesn't interfere with other equipments in your home or those of your neighbors;ensure that you will never miss any visitors,even if you are several rooms away. Modern and stylish exterior design, Satisfy all kinds of home furnishing, office buildings, hotels, hospital,factories etc There are 45 different polyphony melodies to choose from the doorbells,so you can enjoy different chime every day LED Flash,When the button is pressed, the doorbell transmitter and receiver flash at the same time with obvious brightness