Keyfob replacement handsets

Can you buy the keyfob handset - 8 button - without the board? I require a replacement for a broken unit.

Has anyone customized a handset to replace the 1,2,3,4… ?

8 button key fob remotes can be purchased here:
https://store.ncd.io/?fwp_product_search=8%20button%20key%20fob%20remote&fwp_product_type=accessories