Can a low-resource LTE router with only 16 MB of flash and 64 MB of RAM reliably support OpenWrt and WireGuard? This article explores the hardware limitations of entry-level routers, including flash storage, memory, CPU performance, VPN encryption, and long-term stability. It also provides practical deployment advice, testing recommendations, and common failure scenarios. Finally, it compares the Wavetel IoT WR143 and WR255 industrial routers as reliable alternatives for indu

Introduction: Why We Must Re-examine M2M and IoT Today Machine-to-machine communication (M2M) and the Internet of Things (IoT) are overlapping ways to describe connected systems. Both can collect data, exchange commands and support business services. Their names alone do not establish a particular architecture, radio generation, security level or scale. A dedicated telemetry installation may remain suitable for its task, while another project may benefit from shared device ma

Industrial IoT projects often use the words modem, M2M router, industrial router, gateway, switch, DTU, and RTU in the same architecture diagram. They are not interchangeable labels, but they are not universal product categories either. One device may combine a cellular modem, IP routing, VPN, serial interfaces, and protocol handling; another may provide only a cellular connection to a host computer.