USB LTE Modems can be used together with the Swarm Perception Box to provide internet connectivity (for management and data) where no Ethernet connectivity is available.
The USB LTE Moden also requires a SIM. The SIM must be 'IoT Ready' (i.e. no PIN protected and does not require extra configuration for APN etc.)
The USB LTE Modem must be able to get a strong enough data signal in order for management and data collection to work correctly. If the Modem is inside a box or otherwise obstructed, the signal strength may be affected.
A short USB extension cable (for example) is also required as there is not enough space to plug a USB Modem into the Swarm Perception Box directly.
Swarm Analytics recommends and tests extensively with the Huawei EC3372 4G LTE USB Dongle Modem: https://www.amazon.de/gp/product/B013UURTL4/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1
As USB Modems vary widely in terms of reliability and quality, we strongly recommend using this model.