Connect remote equipment through 5G NR in standalone or non-standalone mode, with LTE fallback when 5G service is unavailable. The Teltonika RUTM20100500 is a compact cellular router for IoT and industrial IoT sites where enclosure space, carrier resilience and remote administration matter. Its Telit-based cellular platform supports global 5G connectivity, while two physical SIM slots and an embedded eSIM provide multiple subscription options. Carrier failover supports installations that need a secondary cellular path, and remote carrier switching through RMS helps administrators manage SIM and eSIM connectivity across distributed equipment. RutOS supplies the router operating environment, with Web UI and CLI interfaces for configuration. Teltonika RMS integration supports remote lifecycle management and zero-touch provisioning workflows without requiring local access at every installed site. Active PoE input and output can reduce separate power cabling where compatible upstream power equipment and downstream loads are used. The ultra-compact format suits POS terminals, surveillance systems, transport deployments, smart kiosks, edge nodes and other installations with limited mounting space. Within the RUTM20 family, this model combines 5G SA/NSA operation, LTE fallback, dual physical SIM capability, integrated eSIM support, active PoE in/out and RMS-managed deployment control in one compact router.