This remote has an FCC ID of H50T21. It is commonly mispelled as H5OT21. This remote transmits at 434MHz and has a remote start and a keyless entry button. This XT-33 remote was made for the Autopage RF-215, RF-220, RF-315, RF-420, RS725LCD, RS727LCD, RS-660, RS-662, and RS-622. XT-33 can be used to replace XT-42LCD, XT-59, XT-60, XT-61, XT-62, XT-65S, and XT-72S. Those remotes worked on: RS-622, RF-420LCD, RF-305, RF-310, RF-405, RF-410, RS-650Plus, RS-610Plus, RF-1050KE, RF-1055KE, RF-105KE, RS-727LCD, RS-662. Our remotes are tested on keyless entry signal testers before we ship it to you. Free tech support is available to help you program the vehicle to accept the remote.
Autopage has gone out of business but Silencer makes this remote which can work as a replacement for the autopage remotes above. As a Silencer remote, it can be used on the SL-2, SL-3, SL-42, SL-5, SL-52, SL-6, and SL-62 systems.
Programming instructions can be found here: https://aftermarket.remotesandkeys.com/articles/programming-instructions-silencer-slrf41