Currently, I'm considering both the Eu Xun UV9D-PLUS and the Senhaix GT12, and I'm quite satisfied with both.
However, the Exar UV9D-PLUS has a problem with running on battery power, and its transmission power is only 5W (I'm on the second floor, and across from me is a mountain; I don't know if 5W can be transmitted).
However, it is said that the Senhaix GT12 currently has screen interference and other bugs.
Now I'm stuck.