A full industrial router is appropriate when several local devices need Ethernet or Wi-Fi, when traffic needs firewalling or VPNs, when dual SIM or WAN failover is required, or when the site needs remote management, serial interfaces, GPIO and automatic recovery. It becomes the local network gateway rather than a simple radio link.
A basic cellular modem may be enough for one device with its own networking and security, especially at low data volumes. The trade-off is that more responsibility moves into the connected device or central platform. Consider the consequence of failure, how updates will be managed and whether the deployment will grow. A slightly more capable gateway can simplify a fleet, but unnecessary complexity should also be avoided.
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When does an IoT deployment need a full industrial router rather than a simple cellular modem?
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