Directed Electronics 471c 2-button Remote for Dodge Viper 2-Button Replacement Transmitter 434MHz, 2/66 Codes for Select TX Car Alarm Security Systems Compatible with Select Automate, Python, Sidewinder, Valet, and Viper Alarm Systems Uses the 2016 3V round lithium battery 2-Button Remote 434 Mhz 2/66 Codes