Sensors
Our sensors transmit data using LoRaWAN radio waves.
LoRaWAN is a low-power, wide area networking protocol built on top of the LoRa radio modulation technique. It wirelessly connects devices to the internet and manages communication between end-node devices (GlacierGrid Sensors) and network gateways (GlacierGrid Hubs).
Hubs
Each GlacierGrid Hub has a SIM card inserted in the back. As soon as the hub is plugged in, it's default is to use that SIM card to access the strongest cellular connection in the area, regardless of provider.
If the cellular service in your area is not strong, we recommend using an ethernet cable to ensure there are no gaps in your data transfer. If the ethernet cable is plugged in to the WAN port on the hub, the hub will default to the ethernet instead of the SIM Card.
You may notice your hub has two different antennas. The antenna labeled 915 receives the LoRaWan transmission from the sensors. The shorter, flat antenna is what the hub uses to then send that data to our cloud and to your GlacierGrid Dashboard.