This is unwanted item from my parents' home. This was a gift and has only been used once for testing. ● It connects to your home phone and is used with it. To set it up, unplug the phone line from your phone and connect it to the recording device. Then, connect the included white cable between the phone and the recording device. Plug the black adapter into a power outlet and then plug it into the wall. Turn on the power, and the setup is complete. ● When a call comes in, an announcement will automatically play for the caller, indicating that the call is being recorded. This helps prevent scams and other crimes. ● No instruction manual ● No box The items in the photos are all that are included. Reference price: Around 11,000 yen on Rakuten, etc.