Can"t hear your doorbell from the backyard, basement or upstairs bedroom? The Wireless Doorbell Extender Kit allows you to hear your existing doorbell in an additional location. The transmitter easily connects to your existing hard-wired doorbell. When a visitor presses your doorbell button, the transmitter signals the receiver to play a doorbell chime. Plug the receiver into any standard power outlet for doorbell alerts wherever you need them. You can distinguish between front and back doors by adding another transmitter (sold separately). The front doorbell can play one of six selectable melodies. The second doorbell plays a "dong" sound. For security, there are 32 individual codes to protect against outside interference. FEATURES: Receiver works up to 150 feet away from transmitter. Volume adjustment: low, medium, high. Includes 6 selectable doorbell chimes. CONTENTS: Chime Receiver, Chime Transmitter, Double-sided tape.