I hope someone here will be able to tell me what i'm doing wrong and guide me in the right direction. I installed one HAI dimmer for testing purpose. It works fine. Next installed UPStart and connected PIM to computer using HAI 36A05-1 adapter. UPStart detects the serial port and connects without a problem. I put the dimmer in setup mode and tried to add it to UPStart but it doesn't find it. I tried to run singal & noise meter on UPStart but it shows no signal or noise level. My first thought was may be it's not working because I didnt install HAI phase coupler. But it still doesnt work after I added phase coupler per HAI instruction. So now i dont know what to do next. Please someone tell me what i'm missing here.