This remote comes with easy programming instructions to make the system in your car accept this remote. Battery included. The number on the circuit board is either ATDJ or ATBD. The FCC ID on the back of the remote is ELVATOH or ELVATCB. The part number on the remote says APS2K4MS and the Audiovox part number is APS2K4MS50. This remote has been tested to ensure it sends proper signals. We have free tech support to help you complete the programming. This remote is classified as an Audiovox Type 6 Transmitter. This means it can be used to replace or be replaced by other Type 6's like APS2K4MSFLCF110, APS2K4MSFLCF110P, APS2K4MSFLCF112P, and APS2K4MS51. This remote was made for these Prestige Systems: APS510A, APS590TWC, APS610A, APS800A, APS800C, APS875A, APS875C, APS875C, APS995A, APS995C, APS996, APS996A, APS996C, and APS997.