Is the TAC228R controller still available?
Availability of old controller
The TAC228R was withdrawn in 2011 and is no longer available for ordering for new projects. It will still be available as a spare part until 2021-12-31 when it will be terminated.
A suitable alternative is the SE8300 series of room controllers.
The TAC228R had the ability of a remote setpoint using a 0-10V signal, by using lua script and utilizing the input UI23, the same operation can be achieved.