Hello,
some reasons hold me back to use VELBUS at the moment
- the lack of support or an answer to a question asked on the forum ( some while ago i asked three questions , on 1 i got a answer the rest was unanswered.
- lot of delays on promised products like the 10v dimmer.
- the absence of conditions , master clock ( astronomic clock with sunrise and sun fall - very useful if you only want to lights something if its dark ) some conditions are simple to build with modules itself f.e. close / open a valve but if the floor is wet auto close the valve for this you need 1 input and 2 outputs in serie , the same can be done with a lux module for lightning only when dark and if you want to light only in a time frame.
as you can see you need a lot of doubles contacts which make to whole installation very expensive and more expensive if you want to build your installation decentralized when you do that you need more than one f.e a lux meter or timers. - the absence of simulation software.
so before i buy for 5 or 6000 euro’s on VELBUS material i want to know some things , in what time frame the dc dimmers will be released in the shops , when we may expect software that can program all modules and has simulating on board.
can i build with the velbus modules something like light therapy ( ps dc dimmer 0…10v led dimmer and rgb strips , with this material i want to built something that can steer ledstrips that goes on/out in a certain style and patron with all colors mixed separately ) this in favor for my disabled son whan use this well , eventually it would be nice to have it as lights effect in a bathroom aka wellnes 
also will there be f.e separate IR receivers/senders suitable for VELBUS ( this are some ideas ) which you can learn in ir code and lets then send them out on a certain time f.e. send power down to tvset and decoder on 01.00 hr , ( if you fell a sleep you wast money and energy 
)
is it not possible to built a VELBUS module that have only virtual input/outputs ( selectable in style and coupled to the real in-outputs ) f.e 50 or 100 in or outs and a (astronomic) clock + a few timers ( 20 to 50 ) where you can do some conditional procedures like if ,then ,value(virtual in/out) value real in/out f.e( if almostdark then set out1 high for timer(minutes or seconds)). this all build-ed in a 2 or 4 module sized module would be great , if don’t think that I’m the only person am that would like this and i don’t think it is impossible to build by the velleman i.r.'s
if i build this installation in a normal fix-o-rail 150, is this then OK for control by a control organization ( like vincotte) .
i would like to choose for the latest type of relais modules like the VMB4RYNO because as what i can understand is that these modules are firmware upgradeable through the bus , now are these fw upgrade free or have we pay a upgrade fee?
a few questions now, is there in the future a plan to bring out a new diplaymodule , can i connect the the temp sensors on the same bus as all other modules like switches ect, is it possible to use a pushbutton in this way … 1 push light on for 10 minutes ,open watervalve for 5 minutes a second push sets the timer infinitive and a third push closes the watervalve but puts the light off delayed (3…5minutes f.e. )
all these actions must be activated by remote or via web-server ( in favor for my son and also for me both disabled )
i know its a lot of questions , and there can be some more later on , but i have to be sure that i don’t throw away money.
reason that i would like use VELBUS is decentralized so you don’t have to build it in one course and you can spread the cost , and the main … it is not to expensive ( not in that way that you don’t want any domotica ).
hope that i can have some answers here so i can start to draw and built my installation as soon as possible
thanks in advance
Erwin
ps , the maximum inputs for module is 6 the max relay outputs is 4 , is there a possibility that there come modules with more then these in or outputs 