Step 4 in the manual linking process for the EZSnsRF calls for a final 4 second press of the EZSnsRF Set button after pressing the I/O Linc Set button to establish that device as a responder. Not sure the EZSnsRF will complete the link process on its side without the final Set button press. The EZSnsRF stays in linking mode after pressing the I/O Linc Set button so that other responders can be added to that Dakota Alert RF signal. If no other responders are desired then the final Set button press on the EZSnsRF completes the linking process.
I’ve run the SHN Utility on Vista 32, never tried it on a 64 bit machine. Does not matter as the SHN Utility does not support a PLM as a powerline interface. Only a PLC or EZSrve/EZBridge can function as the powerline interface for the SHN Utility.