I have been using this remote for about 6 months. It works perfect. Have used it nearly every day for the time I've had it. I'm a truck driver of a medium sized Hino truck. The body of my truck is about 20 feet, which is separate to the cab. I spent a lot of time in the body of the truck loading and unloading so this remote enables me to control my vehicles clarion stereo while I'm working in the back of the truck. I can be using the remote anywhere from 3-25 feet away from the main radio and it always works perfect.