HaLow
This is the common term of the IEEE 802.11ah amendment to the Wi-Fi standards (IEEE 802.11-2012) that supports sub 1GHz radio frequencies to provide extended range / coverage when compared to conventional Wi-Fi networks operating in the 2.4GHz and 5GHz ISM bands. This technology supports low energy consumption which has significant benefits for remote / difficult to access sensors within the IoT (Internet of Things).