MikroTik's RB-KNOT is an IoT gateway that uses narrowband and CAT-M technology. It offers 2.4GHz wireless, Bluetooth, a Micro-USB port, and 2x Fast Ethernet Ports with PoE-in and PoE-out. With its exceptional connectivity options and protocol support, it brings wireless connectivity to wired sensors, such as electricity meters and relays. This device is a great tool for most outdoor cabinet IoT applications as it includes a DIN rail mount that allows for easy integration.