Hive active heating 2 and hot water... Any good?

[Du1point8]

Now it's £179, can it be added to any boiler, etc or is there some pre-requisites first before I can get one?

Have a10+ year old combi at the moment.

[Du1point8]

Worked out its only hot water if I have a hot water tank... But it should provide to be an easy fix for OH making the system come on from 5 when we are not back till late as we both forgot that day.