"Panasonic KX-TGA20B Brand New Includes One Year Warranty, The Panasonic KX-TGA20 is a key detector that helps you find easily misplaced items using any of the compatible telephone handsets
Attach key detector to your car key ring and activate the key detector's beeping alarm to quickly track down your lost keys. Key Detector's powerful range finds objects up to 600 feet away so you'll find whatever's lost whether it's upstairs, in your car or in the yard. You can register up to four key detectors and give each a distinctive name. KX-TGA20 Features: Key Detector, Helps Find Misplaced Key, Detect Up to 600 Feet, Both the Handset & the Key Detector Beep Sound, See the Distance On the LCD Screen, Up to Four Key Detectors Can be Registered, Will Not Work Without Following Phones: KX-TG6841B, KX-TG6842B, KX-TG6843B, KX-TG6844B, KX-TG6845B, KX-TG6873B, KX-TG7872S, KX-TG7873S, KX-TG7874S, KX-TG7875S"