The model number is 01538HD. This has the built-in wifi. I don't use PC Connect, Access or the Smart Hub. I've gone through the set up steps many times and I still have the same problem.
After the factory reset, I can log in to the station's network using the network name, Acurite 01538-E2. I am able to connect using the Device ID as the password. So far, everything works as printed. Then I navigate to 92.168.4.1 and the screen comes up so I can enter my network login info and my WU station info. But when I hit the button labeled, Save and Restart, the device I'm using (I've tried with 2 different PCs, 2 different laptops, 2 tables and 3 phones) usually times out. That is, I get a countdown timer to when "the module will boot" and when it reaches 0 "zero", it counts into negative numbers. Once or twice I have been able to have the connection input screen actually reload. But when I go to the list of my connected devices on my router, the Device ID (MAC Address) never shows up. Since that is proof that the unit is not connected to my network, I can't get it to upload data to WU.
I have done the factory reset many times. I have reset my router as well. And yes, my router is 2.4 gHz. Any ideas?