content: I bought this remote as an addition to a fully functioning CLT1. I have set the dip-switches identically...but lo and behold, the "updated" model does not work. OK, fine. But there is absolutely zero customer support. There is no phone #. There is an e-mail form on the website...but my attempts have gone completely unheeded. Only after reading some of these posts have I learned that the CLT1D has glaring incompatibility issues. I have wasted so much time, I'm livid. No more Chamberlin...ever!