The device will only work with 2.45GHz Wi-Fi. It will not work with 5GHz.
If you are unsure which one you have in your yard, you most likely have 2.45GHz. 5GHz has less range through walls and is less likely to reach your yard.
The signal strength at the location of your device must also be -70 dBm or higher.
Read more: Wi-Fi: Setup and Troubleshooting Guide