If you have Panasonic Cordless in your home or office this is a thing for you. ou can use this to extend the range of your phone to wider area almost up to 500 Meters. Model: panasonic Cordless Range extender TGA 407B Bought in the United States. As part of cleaning my house I am selling unused items from my home at very cheap price. I mostly live in the United States. This has remained unused, so this is of no use to me. Paid a Good for business or Large building.