This Remote Control fit for Below Knowing Models: 

Amazon Fire TV Stick Lite

Amazon Fire TV Stick (2nd Gen)

Amazon Fire TV Stick (3rd Gen)

Amazon Fire TV Stick 4K

Amazon Fire TV Stick 4K Max

Amazon Fire TV Cube (1st Gen and 2nd Gen)

Amazon Fire TV (3rd Gen, Pendant Design)

Not compatible with:

Amazon Fire TV (1st and 2nd Gen)

Amazon Fire TV Stick (1st Gen)

Amazon Fire TV Edition Smart TVs

Pairing Instructions -

Power Off your Fire Stick by Unplugging and restart. Install new batteries into the remote (Do not use rechargeable batteries). 

Press the Home button about 8-30 seconds until the LED starts to rapidly flash amber, then the remote should automatically pair. 

Note - This is a third party replacement remote However will work exactly the same as your original remote.