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Home Product USR-N520 Dual SIM VPN IoT Gateway | USR IOT N-Series 4G LTE Router for M2M Communications & Smart Grid
RS-232/485 serial devices to the TCP/IP network

USR-N520 Dual SIM VPN IoT Gateway | USR IOT N-Series 4G LTE Router for M2M Communications & Smart Grid

USR-N520 module
N520 IoT gateway
USR-N520 4G DTU
USR-N520
The USR-N520 module serves as an industrial-grade N520 IoT gateway and 4G DTU, enabling seamless cellular connectivity, remote device management, and secure data transmission for IoT applications across diverse environments.
Categories:Automation
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Product Description

The USR-N520 module, also known as the N520 IoT gateway or USR-N520 4G DTU, is a versatile industrial-grade communication device designed for robust IoT deployments. It features 4 digital input channels, 2 relay outputs, and supports direct connection to multiple peripheral modules via RS485, Ethernet, and optional Wi-Fi interfaces. Operating within a wide voltage range of 9-36V DC, it excels in harsh environments with an extended temperature tolerance of -20°C to 70°C. Ideal for smart agriculture, factory automation, and remote monitoring systems, this gateway offers seamless 4G LTE cellular connectivity with global band compatibility. Notable advantages include industrial-grade EMI protection, multi-protocol support (MQTT/Modbus/TCP), and low-power modes, while its lack of built-in battery backup may require external power solutions. The compact design (screen-less) enables easy integration into control cabinets, offering reliable data transmission over cellular networks with network coverage-dependent operational range.
Parameter Specification
Product ModelUSR-N520 module
Device TypeN520 IoT gateway, 4G DTU
Wireless Standard4G LTE Cat 1/3G/2G
Frequency BandsLTE-FDD: B1/B3/B5/B8; LTE-TDD: B34/B38/B39/B40/B41
Data TransmissionTCP/UDP/HTTP/MQTT
SIM Slot1.8V/3V SIM card support
Ethernet Port10/100Mbps RJ45
Serial InterfaceRS232/RS485 (2.0mm header)
Digital I/O4-channel configurable GPIO
Antenna Interface2× SMA connectors (Main/Diversity)
Power InputDC 5-36V wide voltage
Power ConsumptionIdle: ≤1W; Peak: ≤4.5W
Operating Temperature-35°C to +75°C
Humidity Range5% to 95% non-condensing
Protocol SupportModbus RTU/TCP, IPv4/IPv6, DNS, DHCP
Cloud CompatibilityAWS/阿里云/Azure (customizable)
CertificationsCE, FCC, RoHS
question:What is the warranty period?
answer:Our standard warranty is 12 months, covering manufacturing defects under normal use conditions.
question:How is refurbished product failure handled under warranty?
answer:Confirmed refurbished defects in warranty will be resolved via replacement or refund as per policy.
question:Why can't you supply discontinued models while others can?
answer:We prioritize new inventory; other suppliers may use refurbished or obsolete stock sources.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:What is the warranty period?
answer:Our standard warranty is 12 months, covering manufacturing defects under normal use conditions.
question:How is refurbished product failure handled under warranty?
answer:Confirmed refurbished defects in warranty will be resolved via replacement or refund as per policy.
question:Why can't you supply discontinued models while others can?
answer:We prioritize new inventory; other suppliers may use refurbished or obsolete stock sources.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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