If the Ultra Box is on satellite mode, then it has to be connected to satellite cable to receive live TV channels.
Whenever the Ultra Box detects no satellite signal (e.g. you bring the box to other rooms that does not have satellite cable connection, or heavy rain outside), you will see this everytime you change channel:

You'll need to press Switch Now, then it will load the channel via WiFi (Internet streaming).
However, as long your Ultra Box is connected to WiFi (Internet), you can still stream On Demand content and cloud recordings via My Library page as usual, regardless on where you bring the box to (as long within Malaysia, of course).
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Or, if you don't like to manually toggle it like this every time when bad weather occurs or you bring to some other room that doesn't have satellite cable connection, or you don't want this weather interruption to interrupt your TV viewing ever again, and prefer it to go 100% Internet streaming and throw away your satellite dish, yes it is possible. You can go for Plug & Play mode for your Ulti/Ultra Box.
But I must remind you that the reliability and overall experience of their Plug & Play (Internet streaming) service isn't going to be exactly the same as what you can get today from a satellite dish reception (put aside the weather interruption).
Thanks for typing all that out bro, really appreciate it.
2nd floor people mostly just want to watch live football. If it can do this might have to upgrade my package to get this ultra box.