The gateway
The gateway is a white box 9cm x 7cm.
It needs to be connected to power using the proper power supply.
It can connect to the internet either with Ethernet or Wi-Fi. If it is using Ethernet, there will be a network cable plugged into the end.
Useful Links
How the gateway works
The gateway is the connection between the loggers and the internet.
It “hears” the readings being broadcast by any loggers in range, and saves the data to the log on the internet.