How to remap keys only for a particular keyboard in Linux?

I have a numpad connected via USB and my goal is to be able to remap keys on that numpad so they can run custom commands or be mapped to other key combinations. I have this in my .xbindkeysrc file: ~ $ cat .xbindkeysrc "xte 'keydown Super_L' 'key Left' 'keyup Super_L'" m:0x10 + c:79 + Release Mod2 + KP_Home This remaps the NUM 7 key (which normally prints 7) to Super_L + Left Arrow. That's great and it works, BUT FOR ALL KEYBOARDS, while my goal is to make it work only for the numpad. Been searching how to do it, but the closest I got was to use xinput set-button-map. Unfortunately, this seems to only work for devices like mouses. I like tried fetching what the button map is for the numpad with xinput get-button-map [device id] but it just prints numbers from 1 to 7 and I definitely have more buttons on my keypad, so it doesn't necessarily make sense. Any advice?