NT1-B, aka "Super Ethernet Port", is a serial-to-Ethernet module from Ebyte measuring 35×22×24 mm and weighing ~8.8 g. It uses a TTL serial + RJ45 interface, operates at 3.0–5.5 V DC, and enables bidirectional transparent data transfer. It supports TCP/UDP, MQTT, HTTP, serves as a Modbus gateway, and works with platforms like Alibaba Cloud and Baidu Cloud. Configurable via web, configuration tool, or AT commands. Its three-proof (anti-mold, anti-moisture, anti-salt fog) housing is suitable for -40°C to +85°C industrial environments.