Hi, my test bench has a one of these that I purchased in 2013. I don't do much DALIcontrol as there's not much call for DALI buildings in our small city but I do have projects where it's the simple solution. My problem is now that I'm creating a project for a laboratory I've found that the time clock is losing time every day, it's just a few minutes, but this means that the 7am and 7pm changeover times shifts every day. Is there a backup battery that needs replacing or something? I cannot find any documentation on this but I'm assuming that it needs one. If it were seconds a day one could find a solution for this but minutes a day?