This 3 button remote’s FCC ID begins with EZSDEI474 and came in these variations: EZSDEI474V, EZSDEI474P, EZSDEI474S. The DEI part numbers were Viper 473V, Avital 473L, Avital 7133L, Valet 473T, Python 473P.
Works on these systems: Avital 21000, 2200, 4000, 4100, 4200, 4300, 4400, Python 440 HP, 460 HP, 660 XP, Sidewinder 381S, 3200 HS, 3300 HS, 5500 XS, Valet 562T, 561R, 712T, 716T, Hornet 740, 742, Rattler 110D, 210D, 310D, 369D, Viper 210 HV, 350 HV, 650 XV, 850 XV