1Please check the picture of "Software-Config-Map-Important!"
   Should select the right COM port.
2For GSM-RELAY and GSM-CTL products,that must need to program the Control phone number    into the device with the PC software, or the device maybe not respond the the SMS you    send to it. that means you need register your control phone number inside the device.


Any problem,please use the MSN online to contact wafer company:
Online service MSN: frank_ic2001@hotmail.com
Best Regards,
Frank