Increase range of GENIUS ECHO TX4 gate remote

Hello members !

I replaced my old automated gate remote with a new one. A GENIUS ECHO TX4 remote. It looks like the range of this new remote is way lesser than the older one. The maximum range is only 15m. Fact is that it's not very practical. So I'm searching a way to increase the range of the remote. Do you have any idea to do it ?

Thank you !

By a decent remote control from the gate control manufacturer.