Replacement remote control is the ultimate 4 button, two way 433Mhz replacment remote by Directed Electronics. Utilizing DEI"s patented responder technology. This system should only be installed by a professional trained technician. The easy to use LCD remote confirms all commands with icons and text. This is the new second generation viper 2 way remote, super code hopping 4 button 2 way transmitter. Guaranteed Original DEI Product in factory sealed package.