You can place the Grundig Wireless Doorbell with 2 Wireless Receivers anywhere in your home. Place the doorbell button at the front door. The package includes 2 receivers which work on 2 AA batteries (not included). This way, you have the flexibility to place the receiver anywhere in your home or even take it upstairs in your pocket. The range between the doorbell button and receiver is up to 80m. Choose from one of 6 melodies or set up a light signal when someone rings your doorbell. That's useful for senior citizens and the hearing impaired. You can also set the volume of the receiver. This way, you can be sure you always hear the doorbell.