How would you like to permanently end unwanted phone calls from telemarketers? Now you can! Simply attach this devise between the phone and the phone line. When you receive an unwanted call, you just press a button and hang up. The caller will hear a professional, polite recording that says "Hello, this message is to notify you to remove this phone number from your calling list, as we do not wish to receive this kind of phone call. Thank you . Good bye." After the message this devise will disconnect the line. The telemarketing company is legally required to remove you from their list, not call you again, and forbidden to pass on your number to other telemarketers. Simple to install. Requires no batteries