If your remote has a circuit board number of DT8B, DT8C, or RT4A then the remote is a 492T regardless of what FCC ID is printed on the remote's case. It could be EZSDEI467, EZSDEI492, EZSDEI493, EZSDEI493C or something else if the remote had ever been re-cased. This remote works on these DEI systems: Automate 2, Automate 3+, Automate 5+, Equalizer 2, Valet 710T, Hornet 718T, Hornet 719T, Python 650, Python 750, Sidewinder 5000, Sidewinder 6000, Wasp 718W, Viper 300+, Viper C 50, Viper 500+, Viper 500NX. This is a 2 button remote with a frequency of 302 MHz. Remote comes with free programming support by phone/email/chat.