The Climair has to be positioned so it can clearly see the AC unit. It
has a range the same as your old remote (about 5 metres normally). The Climair comes with included velcro strips to easily fit it to a convenient wall or surface.
No, the Climair does not have any buttons. Everything is controlled via
your Smartphone. However, if you should not have access to your smartphone, you
can always as well control the AC using the remote control, like in the old