New Genuine Code Alarm 1 way CAT1LR replacement remote control. This will replace the CAT1LR, CAT1TW6 (one way functionality only). This will also replace the CAT4M, CAT4MLED, CATLCD, and the CATRLCD (one way functionality only, will not control keyless entry) If you have any questions about compatibility please ask, you can be pointed in the correct direction. This looks just like the CAT1, but it will not work in its place, so please verify your part numbers before ordering.