Responder SST Systems from Viper are simply the most advanced 2-Way Security and Remote Start systems in the world! Responder SST systems employ Spread Spectrum Technology, digital frequency hopping and multiple frequency transmission to assure that, if a frequency is blocked, the signal still goes through. Responder SST also uses dual error correction systems to combat signal data corruption and minimize signal interference. The result is rock solid range of up to one full mile!

The interactive display on the Responder remote confirms all commands - virtually instantly - with easy to understand icons, plus text! It alerts users to security system triggers by beeping or vibrating when out of audible range of the siren. And of course the Viper 5900 and 5500 will start your vehicle with the push of a button, and you'll get confirmation back that it started, from up to one mile away!