Of course there is, but the K400 just does its job very well. You can get all kinds of Bluetooth and RF remotes. I have a generic one also meant for HTPCs (Rii brand) and it literally requires line of sight within 3 meters to work at all. The K400 is recommended for a reason.
There really is no alternative to that Logitech keyboard is there (I opened that link wondering if it was something else but nope …)
Of course there is, but the K400 just does its job very well. You can get all kinds of Bluetooth and RF remotes. I have a generic one also meant for HTPCs (Rii brand) and it literally requires line of sight within 3 meters to work at all. The K400 is recommended for a reason.