Occasionally we have requests for these and in the past 2 years I think we have installed a grand total of 3 systems. Overall it's not rocket science to set them up, but I have had odd results at times where things will be great for a month and then go haywire. Out of the the 3 system installs 1 has been trustworthy and 2 are functional but have a tendency to have a mind of their own. Long story short, a new customer calls a few weeks back explaining how they have an X10 clock that controls 2 modules (one for each transformer) and how they have only lived in the home for 6 months and all was fine until recently (lighting system and x10 system were already installed by previous owners contractors). Myself and the guys I work with are not terribly excited about this news because to be honest that seems to be this devices MO. Anyway, we have done every kind of trouble shooting imaginable from basic analysis to replacing modules, adding another seperate clock moving it to the lower level of the home to control one freaking module....End result, this thing is still schizophrenic and as of today both clocks have decided they simply will not turn on either or off their circuits at all. I was seriously ready to punt them out the window and run as fast as I could to ewing and get 2 analog timers and just say DEAL WITH IT...But alas, im here seeking any similiar stories and feedback or knowledge...Thanks a lot..