I'm trying to connect a Dakota DCR-2500 to an Everspring SM103 door/window detector so that the DCR-2500 can connect to HS. I'm not sure about the wire connection and could use some help. there are 2 wires screws to the external wire connection on the SM100, and 3 wire screws per channel on the DCR-2500 labeled NO, COM and NC. Which 2 wire screws on the DCR-2500 should I use?