Hi all, In a project of 76 modules there are plenty of shutter and window screens. Since there were not available at this time shutter relays, we used L5512 relays modules. The system is not fully commissioned yet, but all worked fine since the shutter installer for 3 second delay between Up and Down movement. We used the CTC only for this job at this time. However the CTC needs for reset almost every night. We changed CTC but the new do the same thing. I am thinking to install a small UPS only for the CTC. On the other hand, can you please check the code? [URL]http://rapidshare.com/files/199916712/For_forum.zip.html[/URL] Thanks in advance, Antonis