Valet 450T = no remote/not rf
Valet 450R = 485T (Discontinued, use 485M)
Valet 450R = 475T (Discontinued, use 474T)
Valet 519T (date code 2J-5J) = 465T
Valet 519T (date code 6A-up) = 493C
Valet 519H (date code 5A-8H) = 491T (Discontinued, use 485M)
Valet 519H (date code 8K-up) = 471T
Valet 519H2 = see install guide for correct transmitter
Valet 550T = no remote/not rf
Valet 551R (date code 7G-9A) = 491T (Discontinued, use 485M)
Valet 551R (date code 9B-up) = 471T
Valet 551T = no remote/not rf
Valet 552T (date code 4L-7C) = 491T (Discontinued, use 485M)
Valet 552T (date code 7G-8J) = 491T (Discontinued, use 485M)
Valet 552T (date code 9A-up) = 471T
Valet 554T = 477P, 474T
Valet 561T = no remote/not rf
Valet 561R = 473T
Valet 562T = 474T
Valet 563T = 474T
Valet 710T (date code 5J-6F) = 493C
Valet 710T (date code 6G-7D) = 492T
Valet 710T (date code 7E-up) = 491T (Discontinued, use 485M)
Valet 711T (date code 2C-5K) = 465T
Valet 711T (date code 7E-up) = 491T (Discontinued, use 485M)
Valet 712T (date code 2J-7D) = 465T
Valet 712T (date code 4K-up) = 474T
Valet 716T = 474T