Viper Responder 350 2-Way Security System 3305V 3305V - Viper Responder 2-Way Car Alarm Vehicle Security System with Keyless Entry and LCD 2-Way Remote Transmitter 2-way Car Alarm Security System Not sure which model is right for you? Click Here to compare different Viper models Built-in keyless entry features Includes one main LCD 2-way remote and one 4-button 1-way sidekick remote