I had mine fitted by a car audio and security company down in worthing which was a approved retail and fitter for cliffords got a cert and life time warrenty i paid 375 for mine only problem i did have was the battery went in the keyfob but when your using it loads a time a day cant expect anything else so i dont look at that as a problem and they replaced it free of charge to as i say i never had any problems with it on a genuine level used the car as a daily driver to .