4 AUTO CAR SECURITY GPS DEVICE ALARM STATIC CLING STICKERS DECALS! Stop the crooks dead in their tracks with this awesome authentic static cling alarm sticker! The decal is vivid and easy to notice in a stop sign shape, 2x2 inches. The sign is professionaly manufactured to standard security sign specs to give many years of use. No more worry about peeling of the decals when you want to sell the car or even clean the windows! These decals adhere to the inside of the window! GPS Tracking Warning! Get your car protected with the ReadyAlert Car Alarm Decal.