December 06, 2021 2 min read
The G120 is a hybrid 4G LTE-M GPS tracking device that can also be fitted with an Iridium Edge® Module for tracking assets even when they move out of LTE mobile coverage.
The Iridium Satellite Constellation is a system of 66 satellites used for voice and data communications. The constellation covers the entire earth, so voice and data can be transmitted from anywhere worldwide. This makes an Iridium device capable of lone or remote worker tracking, tracking of vehicles in out-of-coverage areas, and enables duress or rollover alerts in these locations.
It provides global GPS tracking coverage anywhere, even when you need to track vehicles and assets in remote locations.
Iridium Edge device and it's airtime is costly
The G120 is fitted with a GPS/GNSS module, a cellular modem, and several other high-quality components including a Bluetooth® module, digital and analog inputs, RS232 and J1939 interfaces.
When the device is within cellular coverage, it records and uploads its position to the server. Typically, when driving it will stay connected to the network and upload immediately for ‘live-tracking’. This data transfer is handled by the cellular modem.
If the device is traveling out of 4G mobile coverage, it can be connected to an Iridium Edge® module. This device houses an Iridium modem and antenna – which allows the device to connect to the Iridium network and transmit data back to our servers.
The G120 records a large amount of data in its internal memory, such as heading changes, speed changes, input changes, and other valuable tracking information at all times.
However, it will send a subset of this data every 15 minutes when in trip (by default) over Iridium SBD. This is completely configurable and ensures that Iridium data costs are kept under control. An Iridium data bill for a minute by minute data would be an unhappy surprise!
The Iridium SBD (short burst data) service only allows a message size of 20 bytes, so a few other key bits of information, such as inputs (for duress) and rollover/crash information can be sent immediately if they occur.
When the device returns to coverage – it will update its full history of stored data, so you can replay trips, and get other detailed tracking information.
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