Milesight Building IoT Gateway EG71

The EG71 is a powerful and intelligent edge IoT gateway designed specifically for smart building and building automation systems (BMS). Equipped with a quad-core industrial-grade processor and large onboard memory, EG71 ensures stable performance for large-scale device connectivity, edge computing, and local automation.

Supporting both wired and wireless connectivity, EG71 enables seamless data aggregation from diverse field devices such as sensors, meters, controllers, and actuators. With native support for RS485, KNX, M-BUS (under development), LoRaWAN®, Wi-Fi, Ethernet, and Cellular (4G), it bridges field-level devices with cloud platforms or BMS systems efficiently.

EG71 supports mainstream industrial and building protocols including Modbus, BACnet, MQTT, and HTTP, enabling fast, plug-and-play deployment and easy integration with third-party hardware and software. Combined with Milesight Development Platform, it offers centralized remote management, security, and scalability for modern smart buildings.

Key Features

• Quad-core 1.5 GHz industrial processor with large memory for stable edge processing
• Rich I/O interfaces supporting RS485, KNX, M-BUS*, LoRaWAN®, Wi-Fi, Ethernet, and Cellular
• Multi-backhaul connectivity (Ethernet, 4G LTE, Wi-Fi) for reliable network redundancy
• Supports mainstream protocols: Modbus, BACnet, MQTT, HTTP
• LoRaWAN® gateway functionality supporting up to ~2000 end devices
• Built-in NFC for quick and easy addition of Milesight devices
• Secondary development support via Python SDK and Node-RED for custom BMS logic
• Advanced security features including VPN tunnels and firewall rules
• Centralized remote management via Milesight Development Platform

*M-BUS support under development.

Connectivity & Interfaces

Wireless & Network

• LoRaWAN Gateway: 8 channels, Class A/B/C and Supports FUOTA, multicast, noise analyzer, and gateway fleet management
• Wi-Fi: IEEE 802.11 b/g/n (AP & Client modes)
• Cellular: 4G LTE (CAT-1) / GSM
• Ethernet: 2 × Gigabit RJ45 ports (WAN/LAN, software switchable)
• PoE: IEEE 802.3af supported on ETH1

Field Interfaces

• 2 × RS485 (Modbus RTU, BACnet MS/TP)
• 1 × KNX/TP1
• 1 × M-BUS (under development)
• 8 × Universal Inputs (DI, AI, RTD, NTC, resistance)
• 4 × Dry Contact Inputs (digital/pulse counting)
• 3 × Relay Outputs
• 4 × Analog Outputs (4–20 mA / 0–10 V)

LoRa is a registered trademark of Semtech Corporation. LoRaWAN is a trademark of the LoRa Alliance. USB-C is a registered trademark of USB Implementers Forum. MCCI and MCCI Catena are registered trademarks of MCCI Corporation. All other trademarks are the property of their respective owners.