I want to replace an existing switch with an eDLT Zen which will include blind control. The original installer has used normal relays (non interlock, 2 channels per blind) for blind control-direct 240v. My two questions are this, 1-is there any way to interlock the 2 relay channels using logic for example. 2-can i use the left/right function of one button on the eDLT as i would using a normal blind relay otherwise i have to use two buttons? I probably already know the answer to thee questions but maybe someone can enlighten me.