You can't seal them in and expect them to work. And much rain will break up the signal too.
Here's another one; I find they're not much good at getting echo from soft things like hair, they might not work to detect things like dogs or children.
You can't seal them in and expect them to work. And much rain will break up the signal too.
Here's another one; I find they're not much good at getting echo from soft things like hair, they might not work to detect things like dogs or children.