Highlights1000FT Long Operating Range52Melodies to ChooseSpecificationSize - One SizeDetails*Features* - **1000FT Long Operating Range* - Featured with a 1000FT transmitting range,1plug-in receivers included ensures you hear the bell and will never miss a visitor. One transmitter can pair to more than one receivers and one receiver can pair to more than one transmitters. Bring much convenience for your multiple rooms design house. Our package include 1 receiver and a transmitter.**52Melodies to